    <SEC-DOCUMENT>0001140361-21-012703-index.html : 20210414
    <SEC-HEADER>0001140361-21-012703.hdr.sgml : 20210414
    <ACCEPTANCE-DATETIME>20210414085615
    ACCESSION NUMBER:		0001140361-21-012703
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		15
    CONFORMED PERIOD OF REPORT:	20210526
    FILED AS OF DATE:		20210414
    DATE AS OF CHANGE:		20210414

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Northfield Bancorp, Inc.
    		CENTRAL INDEX KEY:			0001493225
    		STANDARD INDUSTRIAL CLASSIFICATION:	SAVINGS INSTITUTION, FEDERALLY CHARTERED [6035]
    		IRS NUMBER:				000000000
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-35791
    		FILM NUMBER:		21824619

    	BUSINESS ADDRESS:
    		STREET 1:		581 MAIN STREET
    		STREET 2:		SUITE 810
    		CITY:			WOODBRIDGE
    		STATE:			NJ
    		ZIP:			07095
    		BUSINESS PHONE:		(732) 499-7200

    	MAIL ADDRESS:
    		STREET 1:		581 MAIN STREET
    		STREET 2:		SUITE 810
    		CITY:			WOODBRIDGE
    		STATE:			NJ
    		ZIP:			07095
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEF 14A
    <SEQUENCE>1
    <FILENAME>nc10022653x1_def14a.htm
    <DESCRIPTION>DEF 14A
    <TEXT>
    Document 1 - file: nc10022653x1_def14a.htm

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    <FILENAME>logo_northfieldbancorpinc.jpg
    <TEXT>
    Document 2 - file: logo_northfieldbancorpinc.jpg

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    <DOCUMENT>
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    <SEQUENCE>3
    <FILENAME>nc10010615x1_annettecatx1.jpg
    <TEXT>
    Document 3 - file: nc10010615x1_annettecatx1.jpg

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    <DOCUMENT>
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    <SEQUENCE>4
    <FILENAME>nc10010615x1_frankpatafx1.jpg
    <TEXT>
    Document 4 - file: nc10010615x1_frankpatafx1.jpg

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    <SEQUENCE>5
    <FILENAME>nc10010615x1_gilchapmanx1.jpg
    <TEXT>
    Document 5 - file: nc10010615x1_gilchapmanx1.jpg

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    <FILENAME>nc10010615x1_johnconnorx1.jpg
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    Document 6 - file: nc10010615x1_johnconnorx1.jpg

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    <SEQUENCE>7
    <FILENAME>nc10010615x1_karenkesslx1.jpg
    <TEXT>
    Document 7 - file: nc10010615x1_karenkesslx1.jpg

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    <SEQUENCE>8
    <FILENAME>nc10010615x1_patricktyax1.jpg
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    Document 8 - file: nc10010615x1_patricktyax1.jpg

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    <SEQUENCE>9
    <FILENAME>nc10010615x1_pauldtahlix1.jpg
    <TEXT>
    Document 9 - file: nc10010615x1_pauldtahlix1.jpg

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    <SEQUENCE>10
    <FILENAME>nc10010615x1_stevenkleix1.jpg
    <TEXT>
    Document 10 - file: nc10010615x1_stevenkleix1.jpg

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    <SEQUENCE>11
    <FILENAME>nc10010615x1_timharrisox1.jpg
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    Document 11 - file: nc10010615x1_timharrisox1.jpg

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    <FILENAME>nc10022653x1_pc01.jpg
    <TEXT>
    Document 12 - file: nc10022653x1_pc01.jpg

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    <SEQUENCE>13
    <FILENAME>nc10022653x1_pc02.jpg
    <TEXT>
    Document 13 - file: nc10022653x1_pc02.jpg

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    <SEQUENCE>14
    <FILENAME>sig_johnwalexander.jpg
    <TEXT>
    Document 14 - file: sig_johnwalexander.jpg

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    <DOCUMENT>
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    <SEQUENCE>15
    <FILENAME>sig_sandrews.jpg
    <TEXT>
    Document 15 - file: sig_sandrews.jpg

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