<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0708</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001427515</cik>
        <entityName>GlycosBio Inc.</entityName>
        <issuerAddress>
            <street1>2450 Holcombe</street1>
            <street2>Suite J</street2>
            <city>Houston</city>
            <stateOrCountry>TX</stateOrCountry>
            <stateOrCountryDescription>TEXAS</stateOrCountryDescription>
            <zipCode>77021</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>(281) 643-7234</issuerPhoneNumber>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <issuerPreviousNameList>
            <previousName>Mercury  Biosystems, Inc.</previousName>
            <previousName>Glycos Biotechnologies, Inc.</previousName>
            <previousName>Glycosbio Food Sciences, Inc.</previousName>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <previousName>GlycosBio Food Sciences, Inc.</previousName>
            <previousName>GLYCOS BIOTECHNOLOGIES INC</previousName>
        </edgarPreviousNameList>
        <entityType>Corporation</entityType>
        <yearOfInc>
            <overFiveYears>true</overFiveYears>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Richard</firstName>
                <middleName>C. Jr.</middleName>
                <lastName>Cilento</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o GlycosBio, Inc .</street1>
                <street2>2450 Holcombe, Suite J</street2>
                <city>Houston</city>
                <stateOrCountry>TX</stateOrCountry>
                <stateOrCountryDescription>TEXAS</stateOrCountryDescription>
                <zipCode>77021</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Frank</firstName>
                <lastName>Foster</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Gideon Hixon Fund</street1>
                <street2>800 Anacapa Street</street2>
                <city>Santa Barbara</city>
                <stateOrCountry>CA</stateOrCountry>
                <stateOrCountryDescription>CALIFORNIA</stateOrCountryDescription>
                <zipCode>93101</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>John</firstName>
                <lastName>Replogle</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>445 Drummond Drive</street1>
                <city>Raleigh</city>
                <stateOrCountry>NC</stateOrCountry>
                <stateOrCountryDescription>NORTH CAROLINA</stateOrCountryDescription>
                <zipCode>27069</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Victoria</firstName>
                <lastName>Niklas</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o GlycosBio, Inc.</street1>
                <street2>2450 Holcombe, Suite J</street2>
                <city>Houston</city>
                <stateOrCountry>TX</stateOrCountry>
                <stateOrCountryDescription>TEXAS</stateOrCountryDescription>
                <zipCode>77021</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Joseph</firstName>
                <lastName>Walowski</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o GlycosBio, Inc.</street1>
                <street2>2450 Holcombe, Suite J</street2>
                <city>Houston</city>
                <stateOrCountry>TX</stateOrCountry>
                <stateOrCountryDescription>TEXAS</stateOrCountryDescription>
                <zipCode>77021</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Biotechnology</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>Decline to Disclose</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06b</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>false</isAmendment>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2024-03-06</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>25000</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>5000000</totalOfferingAmount>
            <totalAmountSold>1125000</totalAmountSold>
            <totalRemaining>3875000</totalRemaining>
            <clarificationOfResponse></clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>5</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse></clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>GlycosBio Inc.</issuerName>
                <signatureName>/s/ Richard C. Cilento Jr.</signatureName>
                <nameOfSigner>Richard C. Cilento Jr.</nameOfSigner>
                <signatureTitle>Chief Executive Officer</signatureTitle>
                <signatureDate>2024-03-21</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
