<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/nport" xmlns:com="http://www.sec.gov/edgar/common" xmlns:ncom="http://www.sec.gov/edgar/nportcommon" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.sec.gov/edgar/nport eis_NPORT_Filer.xsd">
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    <isConfidential>false</isConfidential>
    <accessionNumber>0001752724-24-048485</accessionNumber>
    <filerInfo>

      <filer>
        <issuerCredentials>
          <cik>0000899148</cik>
          <ccc>XXXXXXXX</ccc>
        </issuerCredentials>
      </filer>


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        <classId>C000010326</classId>
        <classId>C000010328</classId>
        <classId>C000010329</classId>
        <classId>C000149022</classId>
      </seriesClassInfo>

    </filerInfo>
  </headerData>
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      <regName>Rydex Series Funds</regName>
      <regFileNumber>811-07584</regFileNumber>
      <regCik>0000899148</regCik>
      <regLei>5493004D62WV1EDNTU07</regLei>
      <regStreet1>702 King Farm Blvd., Suite 200</regStreet1>
      <regCity>Rockville</regCity>
      <regStateConditional regCountry="US" regState="US-MD"/>
      <regZipOrPostalCode>20850</regZipOrPostalCode>
      <regPhone>301-296-5100</regPhone>
      <seriesName>Inverse Government Long Bond Strategy Fund</seriesName>
      <seriesId>S000003690</seriesId>
      <seriesLei>549300MEBX6MJKGCC831</seriesLei>
      <repPdEnd>2024-03-31</repPdEnd>
      <repPdDate>2023-12-31</repPdDate>
      <isFinalFiling>N</isFinalFiling>
    </genInfo>
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      <totLiabs>19098532.64</totLiabs>
      <netAssets>19010049.85</netAssets>
      <assetsAttrMiscSec>0.00000000</assetsAttrMiscSec>
      <assetsInvested>0.00000000</assetsInvested>
      <amtPayOneYrBanksBorr>0.00000000</amtPayOneYrBanksBorr>
      <amtPayOneYrCtrldComp>0.00000000</amtPayOneYrCtrldComp>
      <amtPayOneYrOthAffil>0.00000000</amtPayOneYrOthAffil>
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      <amtPayAftOneYrOther>0.00000000</amtPayAftOneYrOther>
      <delayDeliv>0.00000000</delayDeliv>
      <standByCommit>0.00000000</standByCommit>
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        <name>FEDERAL HOME LOAN BANK</name>
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        <name>BARCLAYS CAPITAL INC.</name>
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            <payOffProf>Short</payOffProf>
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            <expDate>2024-03-19</expDate>
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    <signature>
      <ncom:dateSigned>2024-07-15</ncom:dateSigned>
      <ncom:nameOfApplicant>Rydex Series Funds</ncom:nameOfApplicant>
      <ncom:signature>James Howley</ncom:signature>
      <ncom:signerName>James Howley</ncom:signerName>
      <ncom:title>CFO</ncom:title>
    </signature>
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  <documents>XXXX</documents>
</edgarSubmission>
