<?xml version="1.0" encoding="US-ASCII" standalone="no"?>
<!--Generated by ThunderDome XBRL - 02:02AM UTC 2022-05-10--><xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:country="http://xbrl.sec.gov/country/2022" xmlns:currency="http://xbrl.sec.gov/currency/2022" xmlns:dei="http://xbrl.sec.gov/dei/2022" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2020-01-21" xmlns:exch="http://xbrl.sec.gov/exch/2022" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:naics="http://xbrl.sec.gov/naics/2022" xmlns:sic="http://xbrl.sec.gov/sic/2022" xmlns:srt="http://fasb.org/srt/2022" xmlns:srt-types="http://fasb.org/srt-types/2022" xmlns:stpr="http://xbrl.sec.gov/stpr/2022" xmlns:urgn="http://www.urogen.com/20220331" xmlns:us-gaap="http://fasb.org/us-gaap/2022" xmlns:us-types="http://fasb.org/us-types/2022" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xlink="http://www.w3.org/1999/xlink" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.urogen.com/20220331">
  <xsd:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xsd:import namespace="http://xbrl.sec.gov/naics/2022" schemaLocation="https://xbrl.sec.gov/naics/2022/naics-2022.xsd"/>
  <xsd:import namespace="http://xbrl.sec.gov/country/2022" schemaLocation="https://xbrl.sec.gov/country/2022/country-2022.xsd"/>
  <xsd:import namespace="http://fasb.org/srt/2022" schemaLocation="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd"/>
  <xsd:import namespace="http://xbrl.sec.gov/dei/2022" schemaLocation="https://xbrl.sec.gov/dei/2022/dei-2022.xsd"/>
  <xsd:import namespace="http://xbrl.sec.gov/sic/2022" schemaLocation="https://xbrl.sec.gov/sic/2022/sic-2022.xsd"/>
  <xsd:import namespace="http://fasb.org/us-types/2022" schemaLocation="https://xbrl.fasb.org/us-gaap/2022/elts/us-types-2022.xsd"/>
  <xsd:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>
  <xsd:import namespace="http://xbrl.sec.gov/stpr/2022" schemaLocation="https://xbrl.sec.gov/stpr/2022/stpr-2022.xsd"/>
  <xsd:import namespace="http://xbrl.sec.gov/exch/2022" schemaLocation="https://xbrl.sec.gov/exch/2022/exch-2022.xsd"/>
  <xsd:import namespace="http://xbrl.sec.gov/currency/2022" schemaLocation="https://xbrl.sec.gov/currency/2022/currency-2022.xsd"/>
  <xsd:import namespace="http://www.xbrl.org/dtr/type/2020-01-21" schemaLocation="https://www.xbrl.org/dtr/type/2020-01-21/types.xsd"/>
  <xsd:import namespace="http://fasb.org/srt-types/2022" schemaLocation="https://xbrl.fasb.org/srt/2022/elts/srt-types-2022.xsd"/>
  <xsd:import namespace="http://fasb.org/us-gaap/2022" schemaLocation="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd"/>
  <xsd:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd"/>
  <xsd:annotation>
    <xsd:appinfo>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="urgn-20220331_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="urgn-20220331_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="urgn-20220331_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="urgn-20220331_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple"/>
      <link:roleType id="statement-document-and-entity-information" roleURI="http://www.urogen.com/20220331/role/statement-document-and-entity-information">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">000 - Document - Document And Entity Information</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-condensed-consolidated-balance-sheets-current-period-unaudited" roleURI="http://www.urogen.com/20220331/role/statement-condensed-consolidated-balance-sheets-current-period-unaudited">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">001 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-condensed-consolidated-balance-sheets-current-period-unaudited-parentheticals" roleURI="http://www.urogen.com/20220331/role/statement-condensed-consolidated-balance-sheets-current-period-unaudited-parentheticals">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">002 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-condensed-consolidated-statements-of-operations-and-comprehensive-loss" roleURI="http://www.urogen.com/20220331/role/statement-condensed-consolidated-statements-of-operations-and-comprehensive-loss">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">003 - Statement - Condensed Consolidated Statements of Operations and Comprehensive Loss</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-condensed-consolidated-statements-of-shareholders-equity-unaudited" roleURI="http://www.urogen.com/20220331/role/statement-condensed-consolidated-statements-of-shareholders-equity-unaudited">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">004 - Statement - Condensed Consolidated Statements of Shareholders' Equity (Unaudited)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-condensed-consolidated-statements-of-cash-flow-unaudited" roleURI="http://www.urogen.com/20220331/role/statement-condensed-consolidated-statements-of-cash-flow-unaudited">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">005 - Statement - Condensed Consolidated Statements of Cash Flow (Unaudited)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-1-business-and-nature-of-operations" roleURI="http://www.urogen.com/20220331/role/statement-note-1-business-and-nature-of-operations">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">006 - Disclosure - Note 1 - Business and Nature of Operations</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-2-basis-of-presentation" roleURI="http://www.urogen.com/20220331/role/statement-note-2-basis-of-presentation">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">007 - Disclosure - Note 2 - Basis of Presentation</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-3-significant-accounting-policies" roleURI="http://www.urogen.com/20220331/role/statement-note-3-significant-accounting-policies">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">008 - Disclosure - Note 3 - Significant Accounting Policies</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-4-other-financial-information" roleURI="http://www.urogen.com/20220331/role/statement-note-4-other-financial-information">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">009 - Disclosure - Note 4 - Other Financial Information</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-5-inventories" roleURI="http://www.urogen.com/20220331/role/statement-note-5-inventories">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">010 - Disclosure - Note 5 - Inventories</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-6-fair-value-measurements" roleURI="http://www.urogen.com/20220331/role/statement-note-6-fair-value-measurements">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">011 - Disclosure - Note 6 - Fair Value Measurements</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-7-marketable-securities" roleURI="http://www.urogen.com/20220331/role/statement-note-7-marketable-securities">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">012 - Disclosure - Note 7 - Marketable Securities</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-8-property-and-equipment" roleURI="http://www.urogen.com/20220331/role/statement-note-8-property-and-equipment">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">013 - Disclosure - Note 8 - Property and Equipment</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-9-prepaid-forward-obligation" roleURI="http://www.urogen.com/20220331/role/statement-note-9-prepaid-forward-obligation">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">014 - Disclosure - Note 9 - Prepaid Forward Obligation</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-10-longterm-debt" roleURI="http://www.urogen.com/20220331/role/statement-note-10-longterm-debt">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">015 - Disclosure - Note 10 - Long-term Debt</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-11-leases" roleURI="http://www.urogen.com/20220331/role/statement-note-11-leases">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">016 - Disclosure - Note 11 - Leases</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-12-revenue-from-product-sales" roleURI="http://www.urogen.com/20220331/role/statement-note-12-revenue-from-product-sales">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">017 - Disclosure - Note 12 - Revenue From Product Sales</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-13-license-and-collaboration-agreements" roleURI="http://www.urogen.com/20220331/role/statement-note-13-license-and-collaboration-agreements">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">018 - Disclosure - Note 13 - License and Collaboration Agreements</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-14-shareholders-equity" roleURI="http://www.urogen.com/20220331/role/statement-note-14-shareholders-equity">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">019 - Disclosure - Note 14 - Shareholders' Equity</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-15-sharebased-compensation" roleURI="http://www.urogen.com/20220331/role/statement-note-15-sharebased-compensation">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">020 - Disclosure - Note 15 - Share-based Compensation</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-16-income-taxes" roleURI="http://www.urogen.com/20220331/role/statement-note-16-income-taxes">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">021 - Disclosure - Note 16 - Income Taxes</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-17-related-parties" roleURI="http://www.urogen.com/20220331/role/statement-note-17-related-parties">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">022 - Disclosure - Note 17 - Related Parties</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-18-commitments-and-contingencies" roleURI="http://www.urogen.com/20220331/role/statement-note-18-commitments-and-contingencies">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">023 - Disclosure - Note 18 - Commitments and Contingencies</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-19-subsequent-events" roleURI="http://www.urogen.com/20220331/role/statement-note-19-subsequent-events">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">024 - Disclosure - Note 19 - Subsequent Events</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-significant-accounting-policies-policies" roleURI="http://www.urogen.com/20220331/role/statement-significant-accounting-policies-policies">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">025 - Disclosure - Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-3-significant-accounting-policies-tables" roleURI="http://www.urogen.com/20220331/role/statement-note-3-significant-accounting-policies-tables">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">026 - Disclosure - Note 3 - Significant Accounting Policies (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-4-other-financial-information-tables" roleURI="http://www.urogen.com/20220331/role/statement-note-4-other-financial-information-tables">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">027 - Disclosure - Note 4 - Other Financial Information (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-5-inventories-tables" roleURI="http://www.urogen.com/20220331/role/statement-note-5-inventories-tables">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">028 - Disclosure - Note 5 - Inventories (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-6-fair-value-measurements-tables" roleURI="http://www.urogen.com/20220331/role/statement-note-6-fair-value-measurements-tables">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">029 - Disclosure - Note 6 - Fair Value Measurements (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-7-marketable-securities-tables" roleURI="http://www.urogen.com/20220331/role/statement-note-7-marketable-securities-tables">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">030 - Disclosure - Note 7 - Marketable Securities (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-8-property-and-equipment-tables" roleURI="http://www.urogen.com/20220331/role/statement-note-8-property-and-equipment-tables">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">031 - Disclosure - Note 8 - Property and Equipment (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-9-prepaid-forward-obligation-tables" roleURI="http://www.urogen.com/20220331/role/statement-note-9-prepaid-forward-obligation-tables">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">032 - Disclosure - Note 9 - Prepaid Forward Obligation (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-10-longterm-debt-tables" roleURI="http://www.urogen.com/20220331/role/statement-note-10-longterm-debt-tables">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">033 - Disclosure - Note 10 - Long-term Debt (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-11-leases-tables" roleURI="http://www.urogen.com/20220331/role/statement-note-11-leases-tables">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">034 - Disclosure - Note 11 - Leases (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-12-revenue-from-product-sales-tables" roleURI="http://www.urogen.com/20220331/role/statement-note-12-revenue-from-product-sales-tables">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">035 - Disclosure - Note 12 - Revenue From Product Sales (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-15-sharebased-compensation-tables" roleURI="http://www.urogen.com/20220331/role/statement-note-15-sharebased-compensation-tables">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">036 - Disclosure - Note 15 - Share-based Compensation (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-2-basis-of-presentation-details-textual" roleURI="http://www.urogen.com/20220331/role/statement-note-2-basis-of-presentation-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">037 - Disclosure - Note 2 - Basis of Presentation (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-3-significant-accounting-policies-details-textual" roleURI="http://www.urogen.com/20220331/role/statement-note-3-significant-accounting-policies-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">038 - Disclosure - Note 3 - Significant Accounting Policies (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-3-significant-accounting-policies-useful-lives-of-property-and-equipment-details" roleURI="http://www.urogen.com/20220331/role/statement-note-3-significant-accounting-policies-useful-lives-of-property-and-equipment-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">039 - Disclosure - Note 3 - Significant Accounting Policies - Useful Lives of Property and Equipment (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-4-other-financial-information-accounts-payable-and-accrued-expense-details" roleURI="http://www.urogen.com/20220331/role/statement-note-4-other-financial-information-accounts-payable-and-accrued-expense-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">040 - Disclosure - Note 4 - Other Financial Information - Accounts Payable and Accrued Expense (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-4-other-financial-information-interest-and-other-income-expense-net-details" roleURI="http://www.urogen.com/20220331/role/statement-note-4-other-financial-information-interest-and-other-income-expense-net-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">041 - Disclosure - Note 4 - Other Financial Information - Interest and Other Income (Expense), Net (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-5-inventories-details-textual" roleURI="http://www.urogen.com/20220331/role/statement-note-5-inventories-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">042 - Disclosure - Note 5 - Inventories (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-5-inventories-inventories-details" roleURI="http://www.urogen.com/20220331/role/statement-note-5-inventories-inventories-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">043 - Disclosure - Note 5 - Inventories - Inventories (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-6-fair-value-measurements-details-textual" roleURI="http://www.urogen.com/20220331/role/statement-note-6-fair-value-measurements-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">044 - Disclosure - Note 6 - Fair Value Measurements (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-6-fair-value-measurements-assets-and-liabilities-measured-at-fair-value-on-a-recurring-basis-details" roleURI="http://www.urogen.com/20220331/role/statement-note-6-fair-value-measurements-assets-and-liabilities-measured-at-fair-value-on-a-recurring-basis-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">045 - Disclosure - Note 6 - Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-7-marketable-securities-details-textual" roleURI="http://www.urogen.com/20220331/role/statement-note-7-marketable-securities-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">046 - Disclosure - Note 7 - Marketable Securities (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-7-marketable-securities-summary-of-marketable-securities-details" roleURI="http://www.urogen.com/20220331/role/statement-note-7-marketable-securities-summary-of-marketable-securities-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">047 - Disclosure - Note 7 - Marketable Securities - Summary of Marketable Securities (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-7-marketable-securities-fair-values-of-marketable-securities-by-contractual-maturity-details" roleURI="http://www.urogen.com/20220331/role/statement-note-7-marketable-securities-fair-values-of-marketable-securities-by-contractual-maturity-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">048 - Disclosure - Note 7 - Marketable Securities - Fair Values of Marketable Securities by Contractual Maturity (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-8-property-and-equipment-details-textual" roleURI="http://www.urogen.com/20220331/role/statement-note-8-property-and-equipment-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">049 - Disclosure - Note 8 - Property and Equipment (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-8-property-and-equipment-property-and-equipment-details" roleURI="http://www.urogen.com/20220331/role/statement-note-8-property-and-equipment-property-and-equipment-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">050 - Disclosure - Note 8 - Property and Equipment - Property and Equipment (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-9-prepaid-forward-obligation-details-textual" roleURI="http://www.urogen.com/20220331/role/statement-note-9-prepaid-forward-obligation-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">051 - Disclosure - Note 9 - Prepaid Forward Obligation (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-9-prepaid-forward-obligation-activity-in-the-carrying-value-of-the-prepaid-forward-liability-details" roleURI="http://www.urogen.com/20220331/role/statement-note-9-prepaid-forward-obligation-activity-in-the-carrying-value-of-the-prepaid-forward-liability-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">052 - Disclosure - Note 9 - Prepaid Forward Obligation - Activity in the Carrying Value of the Prepaid Forward Liability (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-10-longterm-debt-details-textual" roleURI="http://www.urogen.com/20220331/role/statement-note-10-longterm-debt-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">053 - Disclosure - Note 10 - Long-term Debt (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-10-longterm-debt-details" roleURI="http://www.urogen.com/20220331/role/statement-note-10-longterm-debt-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">054 - Disclosure - Note 10 - Long-term Debt (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-11-leases-details-textual" roleURI="http://www.urogen.com/20220331/role/statement-note-11-leases-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">055 - Disclosure - Note 11 - Leases (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-11-leases-components-of-lease-cost-details" roleURI="http://www.urogen.com/20220331/role/statement-note-11-leases-components-of-lease-cost-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">056 - Disclosure - Note 11 - Leases - Components of Lease Cost (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-11-leases-amounts-of-assets-and-liabilities-details" roleURI="http://www.urogen.com/20220331/role/statement-note-11-leases-amounts-of-assets-and-liabilities-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">057 - Disclosure - Note 11 - Leases - Amounts of Assets and Liabilities (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-11-leases-supplemental-information-related-to-leases-details" roleURI="http://www.urogen.com/20220331/role/statement-note-11-leases-supplemental-information-related-to-leases-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">058 - Disclosure - Note 11 - Leases - Supplemental Information Related to Leases (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-11-leases-maturities-of-lease-liabilities-details" roleURI="http://www.urogen.com/20220331/role/statement-note-11-leases-maturities-of-lease-liabilities-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">059 - Disclosure - Note 11 - Leases - Maturities of Lease Liabilities (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-11-leases-sublease-income-recognized-details" roleURI="http://www.urogen.com/20220331/role/statement-note-11-leases-sublease-income-recognized-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">060 - Disclosure - Note 11 - Leases - Sublease Income Recognized (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-12-revenue-from-product-sales-net-product-sales-details" roleURI="http://www.urogen.com/20220331/role/statement-note-12-revenue-from-product-sales-net-product-sales-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">061 - Disclosure - Note 12 - Revenue From Product Sales - Net Product Sales (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-12-revenue-from-product-sales-sales-reserves-activity-details" roleURI="http://www.urogen.com/20220331/role/statement-note-12-revenue-from-product-sales-sales-reserves-activity-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">062 - Disclosure - Note 12 - Revenue From Product Sales - Sales Reserves Activity (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-13-license-and-collaboration-agreements-details-textual" roleURI="http://www.urogen.com/20220331/role/statement-note-13-license-and-collaboration-agreements-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">063 - Disclosure - Note 13 - License and Collaboration Agreements (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-14-shareholders-equity-details-textual" roleURI="http://www.urogen.com/20220331/role/statement-note-14-shareholders-equity-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">064 - Disclosure - Note 14 - Shareholders' Equity (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-15-sharebased-compensation-details-textual" roleURI="http://www.urogen.com/20220331/role/statement-note-15-sharebased-compensation-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">065 - Disclosure - Note 15 - Share-based Compensation (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-15-sharebased-compensation-effect-of-sharebased-compensation-on-the-condensed-consolidated-statements-of-operations-details" roleURI="http://www.urogen.com/20220331/role/statement-note-15-sharebased-compensation-effect-of-sharebased-compensation-on-the-condensed-consolidated-statements-of-operations-details">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">066 - Disclosure - Note 15 - Share-based Compensation - Effect of Share-based Compensation On the Condensed Consolidated Statements of Operations (Details)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
      <link:roleType id="statement-note-16-income-taxes-details-textual" roleURI="http://www.urogen.com/20220331/role/statement-note-16-income-taxes-details-textual">
        <link:definition xmlns="http://www.xbrl.org/2003/linkbase">067 - Disclosure - Note 16 - Income Taxes (Details Textual)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:element id="urgn_AccruedClinicalExpense" name="AccruedClinicalExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="urgn_AccruedFinancingOnPrepaidForwardObligation" name="AccruedFinancingOnPrepaidForwardObligation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="urgn_AccruedResearchAndDevelopmentExpense" name="AccruedResearchAndDevelopmentExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="urgn_AccruedSalesReserve" name="AccruedSalesReserve" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="urgn_AccruedSalesReserveCurrent" name="AccruedSalesReserveCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="urgn_AccruedSellingGeneralAndAdministrativeExpense" name="AccruedSellingGeneralAndAdministrativeExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="urgn_AgenusIncMember" name="AgenusIncMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="urgn_AssetsAndLiabilitiesLesseeTableTextBlock" name="AssetsAndLiabilitiesLesseeTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="urgn_CapitalizedClosingCostsOnPrepaidForwardObligation" name="CapitalizedClosingCostsOnPrepaidForwardObligation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="urgn_CashCashEquivalentsAndMarketableSecuritiesPolicyPolicyTextBlock" name="CashCashEquivalentsAndMarketableSecuritiesPolicyPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="urgn_CollaborationAgreementTerm" name="CollaborationAgreementTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_ComputersAndSoftwareMember" name="ComputersAndSoftwareMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="urgn_DebtInstrumentCapitalizedCostsAndDiscounts" name="DebtInstrumentCapitalizedCostsAndDiscounts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="urgn_DebtInstrumentLIBORFloor" name="DebtInstrumentLIBORFloor" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="urgn_DebtInstrumentPaidAndPayableAmount" name="DebtInstrumentPaidAndPayableAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="urgn_DebtSecuritiesAvailableforsaleFairValueMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughThree" name="DebtSecuritiesAvailableforsaleFairValueMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughThree" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="urgn_DecreaseInPrepaidForwardObligationAmountsPaidAndPayable" name="DecreaseInPrepaidForwardObligationAmountsPaidAndPayable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_DocumentAndEntityInformation" name="DocumentAndEntityInformation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element id="urgn_FinancingOnPrepaidForwardObligation" name="FinancingOnPrepaidForwardObligation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_FurnitureMember" name="FurnitureMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_GovernmentSponsoredProgramsReservesMember" name="GovernmentSponsoredProgramsReservesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="urgn_InterestAndOtherIncomeNet" name="InterestAndOtherIncomeNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="urgn_InventoryCurrentAndNoncurrentNet" name="InventoryCurrentAndNoncurrentNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="urgn_IssuanceCostsIncurredDuringNoncashOrPartialNoncashTransaction" name="IssuanceCostsIncurredDuringNoncashOrPartialNoncashTransaction" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_JelmytoMember" name="JelmytoMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_LaboratoryEquipmentMember" name="LaboratoryEquipmentMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_LeaseAgreementForOfficeInLosAngelesCaliforniaMember" name="LeaseAgreementForOfficeInLosAngelesCaliforniaMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_LeaseAgreementForOfficeInPrincetonNewJerseyMember" name="LeaseAgreementForOfficeInPrincetonNewJerseyMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="urgn_LesseeOperatingLeaseLiabilityToBePaidAfterYearThree" name="LesseeOperatingLeaseLiabilityToBePaidAfterYearThree" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="urgn_LesseeOperatingLeaseSubleaseIncomeRecognizedNetInOperatingExpensesTableTextBlock" name="LesseeOperatingLeaseSubleaseIncomeRecognizedNetInOperatingExpensesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="urgn_LicenseAgreementExpirationTerm" name="LicenseAgreementExpirationTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration"/>
  <xsd:element id="urgn_LicenseAgreementMaximumPayableForCertainClinicalDevelopmentAndRegulatoryMilestones" name="LicenseAgreementMaximumPayableForCertainClinicalDevelopmentAndRegulatoryMilestones" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="urgn_LicenseAgreementMaximumPayableForCertainCommercialMilestones" name="LicenseAgreementMaximumPayableForCertainCommercialMilestones" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="urgn_LicenseAgreementRoyaltyPercentageOfNetSalesOfLicensedProducts" name="LicenseAgreementRoyaltyPercentageOfNetSalesOfLicensedProducts" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_MDAndersonMember" name="MDAndersonMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_ManufacturingEquipmentMember" name="ManufacturingEquipmentMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="urgn_NonCashNewLeaseLiabilities" name="NonCashNewLeaseLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_NoteToFinancialStatementDetailsTextual" name="NoteToFinancialStatementDetailsTextual" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_NotesToFinancialStatements" name="NotesToFinancialStatements" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_NotesToFinancialStatementsAbstract" name="NotesToFinancialStatementsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element id="urgn_OperatingLeaseLiabilityNoncashAdjustments" name="OperatingLeaseLiabilityNoncashAdjustments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="urgn_OtherFinanceIncomeExpense" name="OtherFinanceIncomeExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="urgn_OtherFinancialInformationTextBlock" name="OtherFinancialInformationTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="urgn_OtherIncomeExpense" name="OtherIncomeExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_OtherReservesMember" name="OtherReservesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="urgn_PaymentsForLicenseAgreement" name="PaymentsForLicenseAgreement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="urgn_PrepaidForwardAgreementFutureCashFlowsIncreaseInPercentageOfNetSales" name="PrepaidForwardAgreementFutureCashFlowsIncreaseInPercentageOfNetSales" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element id="urgn_PrepaidForwardAgreementFutureCashPaymentsPercentageOfNetSales" name="PrepaidForwardAgreementFutureCashPaymentsPercentageOfNetSales" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element id="urgn_PrepaidForwardAgreementMinimumFutureCashFlows" name="PrepaidForwardAgreementMinimumFutureCashFlows" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="urgn_PrepaidForwardAgreementMinimumFutureCashFlowsRate" name="PrepaidForwardAgreementMinimumFutureCashFlowsRate" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="urgn_PrepaidForwardObligation" name="PrepaidForwardObligation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="urgn_PrepaidForwardObligationDisclosureTextBlock" name="PrepaidForwardObligationDisclosureTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="urgn_PrepaidForwardObligationExpectedCashFlowsInNextTwelveMonths" name="PrepaidForwardObligationExpectedCashFlowsInNextTwelveMonths" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="urgn_PrepaidForwardObligationPolicyPolicyTextBlock" name="PrepaidForwardObligationPolicyPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="urgn_ProceedsFromPrepaidForwardArrangementNet" name="ProceedsFromPrepaidForwardArrangementNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="urgn_ProceedsFromPrepaidForwardObligation" name="ProceedsFromPrepaidForwardObligation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="urgn_PropertyPlantAndEquipmentUsefulLifeTableTextBlock" name="PropertyPlantAndEquipmentUsefulLifeTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_RTWInvestmentsMember" name="RTWInvestmentsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_SalesBetween200MillionAnd300MillionMember" name="SalesBetween200MillionAnd300MillionMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_SalesBetween200MillionAnd300MillionWithFDAApprovalMember" name="SalesBetween200MillionAnd300MillionWithFDAApprovalMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_SalesOfUpTo200MillionMember" name="SalesOfUpTo200MillionMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_SalesOver300MillionMember" name="SalesOver300MillionMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_SalesOver300MillionWithFDAApprovalMember" name="SalesOver300MillionWithFDAApprovalMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="urgn_SalesReserveAccruals" name="SalesReserveAccruals" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="urgn_SalesReserveUtilization" name="SalesReserveUtilization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_SalesUpTo200MillionWithFDAApprovalMember" name="SalesUpTo200MillionWithFDAApprovalMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="urgn_ScheduleOfActivityInTheCarryingValueOfThePrepaidForwardLiabilityTableTextBlock" name="ScheduleOfActivityInTheCarryingValueOfThePrepaidForwardLiabilityTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="urgn_ScheduleOfSalesReservesTableTextBlock" name="ScheduleOfSalesReservesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="urgn_ScheduleOfSupplementalInformationRelatedToLeasesTableTextBlock" name="ScheduleOfSupplementalInformationRelatedToLeasesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="urgn_SecuredLongTermDebtAdditionalDraw" name="SecuredLongTermDebtAdditionalDraw" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="urgn_SecuredLongTermDebtFirstTranche" name="SecuredLongTermDebtFirstTranche" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="urgn_ShareBasedCompensationArrangementByShareBasedPaymentAwardIndividualVotingPowersPercentage" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardIndividualVotingPowersPercentage" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element id="urgn_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfPurchasePriceForIndividualsHavingMoreThanTenPercentOfCombinedVotingPower" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfPurchasePriceForIndividualsHavingMoreThanTenPercentOfCombinedVotingPower" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_ShareOptionPlanMember" name="ShareOptionPlanMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_The2019InducementPlanMember" name="The2019InducementPlanMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_TwoThousandSeventeenEquityIncentivePlanMember" name="TwoThousandSeventeenEquityIncentivePlanMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_UGN102Member" name="UGN102Member" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_UroGenPharmaIncMember" name="UroGenPharmaIncMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-10-longterm-debt-details" name="statement-statement-note-10-longterm-debt-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-10-longterm-debt-tables" name="statement-statement-note-10-longterm-debt-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-11-leases-amounts-of-assets-and-liabilities-details" name="statement-statement-note-11-leases-amounts-of-assets-and-liabilities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-11-leases-components-of-lease-cost-details" name="statement-statement-note-11-leases-components-of-lease-cost-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-11-leases-maturities-of-lease-liabilities-details" name="statement-statement-note-11-leases-maturities-of-lease-liabilities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-11-leases-sublease-income-recognized-details" name="statement-statement-note-11-leases-sublease-income-recognized-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-11-leases-supplemental-information-related-to-leases-details" name="statement-statement-note-11-leases-supplemental-information-related-to-leases-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-11-leases-tables" name="statement-statement-note-11-leases-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-12-revenue-from-product-sales-net-product-sales-details" name="statement-statement-note-12-revenue-from-product-sales-net-product-sales-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-12-revenue-from-product-sales-sales-reserves-activity-details" name="statement-statement-note-12-revenue-from-product-sales-sales-reserves-activity-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-12-revenue-from-product-sales-tables" name="statement-statement-note-12-revenue-from-product-sales-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-15-sharebased-compensation-effect-of-sharebased-compensation-on-the-condensed-consolidated-statements-of-operations-details" name="statement-statement-note-15-sharebased-compensation-effect-of-sharebased-compensation-on-the-condensed-consolidated-statements-of-operations-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-15-sharebased-compensation-tables" name="statement-statement-note-15-sharebased-compensation-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-3-significant-accounting-policies-tables" name="statement-statement-note-3-significant-accounting-policies-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-3-significant-accounting-policies-useful-lives-of-property-and-equipment-details" name="statement-statement-note-3-significant-accounting-policies-useful-lives-of-property-and-equipment-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-4-other-financial-information-accounts-payable-and-accrued-expense-details" name="statement-statement-note-4-other-financial-information-accounts-payable-and-accrued-expense-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-4-other-financial-information-interest-and-other-income-expense-net-details" name="statement-statement-note-4-other-financial-information-interest-and-other-income-expense-net-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-4-other-financial-information-tables" name="statement-statement-note-4-other-financial-information-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-5-inventories-inventories-details" name="statement-statement-note-5-inventories-inventories-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-5-inventories-tables" name="statement-statement-note-5-inventories-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-6-fair-value-measurements-assets-and-liabilities-measured-at-fair-value-on-a-recurring-basis-details" name="statement-statement-note-6-fair-value-measurements-assets-and-liabilities-measured-at-fair-value-on-a-recurring-basis-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-6-fair-value-measurements-tables" name="statement-statement-note-6-fair-value-measurements-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-7-marketable-securities-fair-values-of-marketable-securities-by-contractual-maturity-details" name="statement-statement-note-7-marketable-securities-fair-values-of-marketable-securities-by-contractual-maturity-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-7-marketable-securities-summary-of-marketable-securities-details" name="statement-statement-note-7-marketable-securities-summary-of-marketable-securities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-7-marketable-securities-tables" name="statement-statement-note-7-marketable-securities-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-8-property-and-equipment-property-and-equipment-details" name="statement-statement-note-8-property-and-equipment-property-and-equipment-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-8-property-and-equipment-tables" name="statement-statement-note-8-property-and-equipment-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-9-prepaid-forward-obligation-activity-in-the-carrying-value-of-the-prepaid-forward-liability-details" name="statement-statement-note-9-prepaid-forward-obligation-activity-in-the-carrying-value-of-the-prepaid-forward-liability-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-note-9-prepaid-forward-obligation-tables" name="statement-statement-note-9-prepaid-forward-obligation-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="urgn_statement-statement-significant-accounting-policies-policies" name="statement-statement-significant-accounting-policies-policies" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
</xsd:schema>
