<SEC-DOCUMENT>0001094285-21-000150.txt : 20210913
<SEC-HEADER>0001094285-21-000150.hdr.sgml : 20210913
<ACCEPTANCE-DATETIME>20210913181056
ACCESSION NUMBER:		0001094285-21-000150
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210913
FILED AS OF DATE:		20210913
DATE AS OF CHANGE:		20210913

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			VanWees Jason
		CENTRAL INDEX KEY:			0001574791

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15295
		FILM NUMBER:		211250688

	MAIL ADDRESS:	
		STREET 1:		1049 CAMINO DOS RIOS
		CITY:			THOUSAND OAKS
		STATE:			CA
		ZIP:			91360

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:			0102

	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_163157100642429.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-09-13</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001574791</rptOwnerCik>
            <rptOwnerName>VanWees Jason</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>Executive Vice President</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-09-13</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>425.9969</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>41055.1899</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">This transaction was executed in multiple trades at prices ranging from $425.445 to $426.28. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.</footnote>
        <footnote id="F2">Reporting person holds 41,055.1899 shares held directly, which includes 2,050 restricted shares, 480.3869 shares purchased under the Employee Stock Purchase Plan and 2,838.8030  equivalent shares held in Teledyne Technologies 401(k) plan based on information received as of January 22, 2021.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Jason VanWees</signatureName>
        <signatureDate>2021-09-13</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
