<SEC-DOCUMENT>0001094285-21-000096.txt : 20210429
<SEC-HEADER>0001094285-21-000096.hdr.sgml : 20210429
<ACCEPTANCE-DATETIME>20210429145134
ACCESSION NUMBER:		0001094285-21-000096
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210428
FILED AS OF DATE:		20210429
DATE AS OF CHANGE:		20210429

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CROCKER CHARLES
		CENTRAL INDEX KEY:			0001061568

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15295
		FILM NUMBER:		21869718

	MAIL ADDRESS:	
		STREET 1:		ONE POST ST
		STREET 2:		STE 2500
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94104

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_161972227996618.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-04-28</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001061568</rptOwnerCik>
            <rptOwnerName>CROCKER CHARLES</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>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <transactionDate>
                <value>2021-04-28</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>288</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>45137</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Represents Restricted Stock Units issued to the Reporting Person under the Administrative Rules of the Amended and Restated Teledyne Technologies Incorporated 2014 Incentive Award Plan Related to Non-Employee Director Restricted Stock Unit Awards and Fees. Each Restricted Stock Unit represents a contingent right to receive one share of Teledyne Common Stock.  Units vest one year from the date of grant.  Shares of common stock will be delivered to the Reporting Person following the vesting date, unless the Reporting Person has made an election to defer delivery of shares until separation from Board service.</footnote>
        <footnote id="F2">In determining the number of units the price of $450.27 was used.</footnote>
        <footnote id="F3">Reporting Person holds 31,624 shares directly and 13,513 shares held by the Crocker Revocable Trust, Charles Crocker, Trustee.  Shares held directly include 856 Restricted Stock Units.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Charles Crocker by S. Paul Sassalos pursuant to Power of Attorney previously filed with SEC</signatureName>
        <signatureDate>2021-04-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
