<SEC-DOCUMENT>0001094285-21-000060.txt : 20210203
<SEC-HEADER>0001094285-21-000060.hdr.sgml : 20210203
<ACCEPTANCE-DATETIME>20210203135000
ACCESSION NUMBER:		0001094285-21-000060
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210129
FILED AS OF DATE:		20210203
DATE AS OF CHANGE:		20210203

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Blackwood Stephen Finis
		CENTRAL INDEX KEY:			0001763148

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15295
		FILM NUMBER:		21585534

	MAIL ADDRESS:	
		STREET 1:		29607 HIDDEN PARK DRIVE
		CITY:			AGOURA HILLS
		STATE:			CA
		ZIP:			91301

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TELEDYNE TECHNOLOGIES INC
		CENTRAL INDEX KEY:			0001094285
		STANDARD INDUSTRIAL CLASSIFICATION:	SEARCH, DETECTION, NAVIGATION, GUIDANCE, AERONAUTICAL SYS [3812]
		IRS NUMBER:				251843385
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0103

	BUSINESS ADDRESS:	
		STREET 1:		1049 CAMINO DOS RIOS
		CITY:			THOUSAND OAKS
		STATE:			CA
		ZIP:			91360
		BUSINESS PHONE:		805-373-4545

	MAIL ADDRESS:	
		STREET 1:		1049 CAMINO DOS RIOS
		CITY:			THOUSAND OAKS
		STATE:			CA
		ZIP:			91360
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_161237818612289.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-01-29</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001094285</issuerCik>
        <issuerName>TELEDYNE TECHNOLOGIES INC</issuerName>
        <issuerTradingSymbol>TDY</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001763148</rptOwnerCik>
            <rptOwnerName>Blackwood Stephen Finis</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1049 CAMINO DOS RIOS</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>THOUSAND OAKS</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>91360</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Senior VP &amp; Treasurer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-01-29</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>211</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>361.65</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>10175.369</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Represents shares issued to the Reporting Person under the first installment of the 2018-2020 cycle of the Performance Share Program.  The shares were valued at $361.65, the average of the high and low sales prices on January 29, 2021.  Share amount confirmed on February 2, 2021.</footnote>
        <footnote id="F2">Reporting Person holds 10,175.3690 shares held directly, which includes 1,118 restricted shares and 169.3690 equivalent shares held in Teledyne Technologies 401(k) plan based on information received as of January 22, 2021.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Stephen Finis Blackwood</signatureName>
        <signatureDate>2021-02-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
