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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-09-07</periodOfReport>

    <notSubjectToSection16>true</notSubjectToSection16>

    <issuer>
        <issuerCik>0000716133</issuerCik>
        <issuerName>CINCINNATI BELL INC</issuerName>
        <issuerTradingSymbol>CBB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001206921</rptOwnerCik>
            <rptOwnerName>DODS WALTER A JR</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>221 EAST FOURTH STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CINCINNATI</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>45202</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-09-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>26541</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>15.5</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-09-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>7338</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>15.5</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Pursuant to the Agreement and Plan of Merger, dated as of March 13, 2020 (the &quot;Merger Agreement&quot;), by and among Cincinnati Bell Inc., an Ohio corporation (the &quot;Company&quot;), Red Fiber Parent LLC, a Delaware limited liability company, and RF Merger Sub Inc., an Ohio corporation and directly wholly owned subsidiary of Parent (&quot;Merger Sub&quot;), at the effective time of the merger of Merger Sub with and into the Company (the &quot;Merger&quot;), each share of common stock, par value $0.01 per share, of the Company (&quot;Company Common Shares&quot;) was converted into the right to receive $15.50 in cash, without interest (the &quot;Merger Consideration&quot;).</footnote>
        <footnote id="F2">Pursuant to the Merger Agreement, at the effective time of the Merger, each outstanding restricted stock unit with respect to Company Common Shares (&quot;Company RSU&quot;) became fully vested and was canceled and converted into the right to receive a lump-sum amount in cash, without interest, equal to the product of (a) the Merger Consideration and (b) the number of Company Common Shares subject to such Company RSU.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Christopher J. Wilson, Attorney-in-fact for Walter A. Dods, Jr.</signatureName>
        <signatureDate>2021-09-07</signatureDate>
    </ownerSignature>
</ownershipDocument>
