<?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">
  <headerData>
    <submissionType>NPORT-P</submissionType>
    <isConfidential>false</isConfidential>
    <filerInfo>

      <filer>
        <issuerCredentials>
          <cik>0000732697</cik>
          <ccc>XXXXXXXX</ccc>
        </issuerCredentials>
      </filer>


      <seriesClassInfo>
        <seriesId>S000019111</seriesId>
        <classId>C000052854</classId>
      </seriesClassInfo>


    </filerInfo>
  </headerData>
  <formData>
    <genInfo>
      <regName>ULTRA SERIES FUND</regName>
      <regFileNumber>811-04815</regFileNumber>
      <regCik>0000732697</regCik>
      <regLei>254900JPNAJ16VJV5X45</regLei>
      <regStreet1>550 SCIENCE DRIVE</regStreet1>
      <regCity>MADISON</regCity>
      <regStateConditional regCountry="US" regState="US-WI"/>
      <regZipOrPostalCode>53711</regZipOrPostalCode>
      <regPhone>608-274-0300</regPhone>
      <seriesName>Madison Target Retirement 2030 Fund</seriesName>
      <seriesId>S000019111</seriesId>
      <seriesLei>2549004BG92C541K9K97</seriesLei>
      <repPdEnd>2019-12-31</repPdEnd>
      <repPdDate>2019-12-31</repPdDate>
      <isFinalFiling>N</isFinalFiling>
    </genInfo>
    <fundInfo>
      <totAssets>62314259.59</totAssets>
      <totLiabs>15748.93</totLiabs>
      <netAssets>62298510.66</netAssets>
      <assetsAttrMiscSec>0</assetsAttrMiscSec>
      <assetsInvested>0</assetsInvested>
      <amtPayOneYrBanksBorr>0</amtPayOneYrBanksBorr>
      <amtPayOneYrCtrldComp>0</amtPayOneYrCtrldComp>
      <amtPayOneYrOthAffil>0</amtPayOneYrOthAffil>
      <amtPayOneYrOther>0</amtPayOneYrOther>
      <amtPayAftOneYrBanksBorr>0</amtPayAftOneYrBanksBorr>
      <amtPayAftOneYrCtrldComp>0</amtPayAftOneYrCtrldComp>
      <amtPayAftOneYrOthAffil>0</amtPayAftOneYrOthAffil>
      <amtPayAftOneYrOther>0</amtPayAftOneYrOther>
      <delayDeliv>0</delayDeliv>
      <standByCommit>0</standByCommit>
      <liquidPref>0</liquidPref>
      <cshNotRptdInCorD>3341048.22</cshNotRptdInCorD>
      <isNonCashCollateral>N</isNonCashCollateral>
      <returnInfo>
        <monthlyTotReturns>
          <monthlyTotReturn classId="C000052854" rtn1="1.39000000" rtn2="1.19000000" rtn3="1.57000000"/>
        </monthlyTotReturns>
        <othMon1 netRealizedGain="541017.61000000" netUnrealizedAppr="266253.30000000"/>
        <othMon2 netRealizedGain="167809.59000000" netUnrealizedAppr="522454.92000000"/>
        <othMon3 netRealizedGain="260211.50000000" netUnrealizedAppr="331070.67000000"/>
      </returnInfo>
      <mon1Flow redemption="2106153.01000000" reinvestment="0.00000000" sales="592112.02000000"/>
      <mon2Flow redemption="768128.10000000" reinvestment="0.00000000" sales="857437.43000000"/>
      <mon3Flow redemption="1635447.49000000" reinvestment="4012494.03000000" sales="491081.23000000"/>


    </fundInfo>
    <invstOrSecs>
      <invstOrSec>
        <name>iShares Global Energy ETF</name>
        <lei>5493005XHS63FFTJXT53</lei>
        <title>iShares Global Energy ETF</title>
        <cusip>464287341</cusip>
        <identifiers>
          <isin value="US4642873412"/>
        </identifiers>
        <balance>40214.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>1239797.62000000</valUSD>
        <pctVal>1.990091908884</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>iShares MSCI EAFE Small-Cap ETF</name>
        <lei>549300MJV5OZGVS4LX86</lei>
        <title>iShares MSCI EAFE Small-Cap ETF</title>
        <cusip>464288273</cusip>
        <identifiers>
          <isin value="US4642882736"/>
        </identifiers>
        <balance>20084.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>1250831.52000000</valUSD>
        <pctVal>2.007803247218</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Schwab Fundamental U.S. Large Company Index ETF</name>
        <lei>549300FOX56PTJLI2612</lei>
        <title>Schwab Fundamental U.S. Large Company Index ETF</title>
        <cusip>808524771</cusip>
        <identifiers>
          <isin value="US8085247711"/>
        </identifiers>
        <balance>261227.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>11149168.36000000</valUSD>
        <pctVal>17.89636420178</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Vanguard Financials ETF</name>
        <lei>G1LHPY5HPCPGWBXV0P88</lei>
        <title>Vanguard Financials ETF</title>
        <cusip>92204A405</cusip>
        <identifiers>
          <isin value="US92204A4058"/>
        </identifiers>
        <balance>16183.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>1234439.24000000</valUSD>
        <pctVal>1.981490772286</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>iShares Edge MSCI Min Vol Emerging Markets ETF</name>
        <lei>XWXMX00WTU4PW8BLTO28</lei>
        <title>iShares Edge MSCI Min Vol Emerging Markets ETF</title>
        <cusip>464286533</cusip>
        <identifiers>
          <isin value="US4642865335"/>
        </identifiers>
        <balance>21201.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>1243650.66000000</valUSD>
        <pctVal>1.996276711633</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>iShares MSCI United Kingdom ETF</name>
        <lei>549300D5PVRLB9ULJS58</lei>
        <title>iShares MSCI United Kingdom ETF</title>
        <cusip>46435G334</cusip>
        <identifiers>
          <isin value="US46435G3341"/>
        </identifiers>
        <balance>55217.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>1882899.70000000</valUSD>
        <pctVal>3.022383167835</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Vanguard Information Technology ETF</name>
        <lei>J2NTZGJBERBYMUMBIE74</lei>
        <title>Vanguard Information Technology ETF</title>
        <cusip>92204A702</cusip>
        <identifiers>
          <isin value="US92204A7028"/>
        </identifiers>
        <balance>20352.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>4983187.20000000</valUSD>
        <pctVal>7.998886565998</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Schwab US TIPS ETF</name>
        <lei>5493001H0ESLTZTZWE77</lei>
        <title>Schwab US TIPS ETF</title>
        <cusip>808524870</cusip>
        <identifiers>
          <isin value="US8085248701"/>
        </identifiers>
        <balance>109530.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>6202683.90000000</valUSD>
        <pctVal>9.956391949482</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>iShares MSCI Japan Small-Cap ETF</name>
        <lei>549300V2JJ85TUQS9L89</lei>
        <title>iShares MSCI Japan Small-Cap ETF</title>
        <cusip>464286582</cusip>
        <identifiers>
          <isin value="US4642865822"/>
        </identifiers>
        <balance>16549.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>1229425.21000000</valUSD>
        <pctVal>1.973442377635</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>SPDR S&amp;P China ETF</name>
        <lei>549300B1I89QUAK0X692</lei>
        <title>SPDR S&amp;P China ETF</title>
        <cusip>78463X400</cusip>
        <identifiers>
          <isin value="US78463X4007"/>
        </identifiers>
        <balance>12090.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>1241038.50000000</valUSD>
        <pctVal>1.992083738202</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>iShares Edge MSCI Min Vol EAFE ETF</name>
        <lei>549300N5K4JSWEZ74544</lei>
        <title>iShares Edge MSCI Min Vol EAFE ETF</title>
        <cusip>46429B689</cusip>
        <identifiers>
          <isin value="US46429B6891"/>
        </identifiers>
        <balance>24997.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>1863276.38000000</valUSD>
        <pctVal>2.990884308886</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>iShares U.S. Home Construction ETF</name>
        <lei>549300E4UYBNT92O5488</lei>
        <title>iShares U.S. Home Construction ETF</title>
        <cusip>464288752</cusip>
        <identifiers>
          <isin value="US4642887529"/>
        </identifiers>
        <balance>14600.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>648532.00000000</valUSD>
        <pctVal>1.041007229754</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Invesco Optimum Yield Diversified Commodity Strategy No K-1 ETF</name>
        <lei>549300FMDZNC0BEIYQ10</lei>
        <title>Invesco Optimum Yield Diversified Commodity Strategy No K-1 ETF</title>
        <cusip>46090F100</cusip>
        <identifiers>
          <isin value="US46090F1003"/>
        </identifiers>
        <balance>111513.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>1846655.28000000</valUSD>
        <pctVal>2.964204537855</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>SPDR Gold Shares</name>
        <lei>549300SMREV46EHBHL79</lei>
        <title>SPDR Gold Shares</title>
        <cusip>78463V107</cusip>
        <identifiers>
          <isin value="US78463V1070"/>
        </identifiers>
        <balance>26455.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3780419.50000000</valUSD>
        <pctVal>6.068234151907</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>iShares Nasdaq Biotechnology ETF</name>
        <lei>549300S7IVD88MPK0066</lei>
        <title>iShares Nasdaq Biotechnology ETF</title>
        <cusip>464287556</cusip>
        <identifiers>
          <isin value="US4642875565"/>
        </identifiers>
        <balance>10187.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>1227635.37000000</valUSD>
        <pctVal>1.970569371553</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>iShares MBS ETF</name>
        <lei>549300M0TH0IE2E6RP07</lei>
        <title>iShares MBS ETF</title>
        <cusip>464288588</cusip>
        <identifiers>
          <isin value="US4642885887"/>
        </identifiers>
        <balance>68834.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>7438202.04000000</valUSD>
        <pctVal>11.93961454487</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Schwab Intermediate-Term U.S. Treasury ETF</name>
        <lei>549300LPS1K6133V2Q55</lei>
        <title>Schwab Intermediate-Term U.S. Treasury ETF</title>
        <cusip>808524854</cusip>
        <identifiers>
          <isin value="US8085248545"/>
        </identifiers>
        <balance>135357.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>7435160.01000000</valUSD>
        <pctVal>11.93473155494</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>iShares 20+ Year Treasury Bond ETF</name>
        <lei>549300WWURKS1JGBZU59</lei>
        <title>iShares 20+ Year Treasury Bond ETF</title>
        <cusip>464287432</cusip>
        <identifiers>
          <isin value="US4642874329"/>
        </identifiers>
        <balance>22706.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3076208.88000000</valUSD>
        <pctVal>4.937853003884</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
    </invstOrSecs>
    <signature>
      <ncom:dateSigned>2020-01-15</ncom:dateSigned>
      <ncom:nameOfApplicant>ULTRA SERIES FUND</ncom:nameOfApplicant>
      <ncom:signature>Greg Hoppe</ncom:signature>
      <ncom:signerName>Greg Hoppe</ncom:signerName>
      <ncom:title>Chief Financial Officer</ncom:title>
    </signature>
  </formData>
</edgarSubmission>
