    <SEC-DOCUMENT>0001628279-23-000172-index.html : 20230825
    <SEC-HEADER>0001628279-23-000172.hdr.sgml : 20230825
    <ACCEPTANCE-DATETIME>20230512160224
    <PRIVATE-TO-PUBLIC>
    ACCESSION NUMBER:		0001628279-23-000172
    CONFORMED SUBMISSION TYPE:	DRS
    PUBLIC DOCUMENT COUNT:		11
    FILED AS OF DATE:		20230512
    <PUBLIC-REL-DATE>20230825
    DATE AS OF CHANGE:		20230513

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Klaviyo, Inc.
    		CENTRAL INDEX KEY:			0001835830
    		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
    		IRS NUMBER:				000000000
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DRS
    		SEC ACT:		1933 Act
    		SEC FILE NUMBER:	377-06713
    		FILM NUMBER:		23915469

    	BUSINESS ADDRESS:
    		STREET 1:		125 SUMMER STREET, FLOOR 6
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02110
    		BUSINESS PHONE:		800-338-1744

    	MAIL ADDRESS:
    		STREET 1:		125 SUMMER STREET, FLOOR 6
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02110
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DRS
    <SEQUENCE>1
    <FILENAME>filename1.htm
    <TEXT>
    Document 1 - file: filename1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>a1_prespectivesummary-cove.jpg
    <TEXT>
    Document 2 - file: a1_prespectivesummary-cove.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>a2_prespectivesummary-stat.jpg
    <TEXT>
    Document 3 - file: a2_prespectivesummary-stat.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>a3_prespectivesummary-base.jpg
    <TEXT>
    Document 4 - file: a3_prespectivesummary-base.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>a4_prespectivesummary-mark.jpg
    <TEXT>
    Document 5 - file: a4_prespectivesummary-mark.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>a8_prespectivesummary-tech.jpg
    <TEXT>
    Document 6 - file: a8_prespectivesummary-tech.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>deloittelogoa.jpg
    <TEXT>
    Document 7 - file: deloittelogoa.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>klaviyologoa.jpg
    <TEXT>
    Document 8 - file: klaviyologoa.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>mda1ba.jpg
    <TEXT>
    Document 9 - file: mda1ba.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>mda2aa.jpg
    <TEXT>
    Document 10 - file: mda2aa.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>prespectivesummary-ecosysta.jpg
    <TEXT>
    Document 11 - file: prespectivesummary-ecosysta.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>