    <SEC-DOCUMENT>0001104659-22-039122-index.html : 20220329
    <SEC-HEADER>0001104659-22-039122.hdr.sgml : 20220329
    <ACCEPTANCE-DATETIME>20220329083557
    ACCESSION NUMBER:		0001104659-22-039122
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		7
    CONFORMED PERIOD OF REPORT:	20220503
    FILED AS OF DATE:		20220329
    DATE AS OF CHANGE:		20220329

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			ACNB CORP
    		CENTRAL INDEX KEY:			0000715579
    		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
    		IRS NUMBER:				232233457
    		STATE OF INCORPORATION:			PA
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-35015
    		FILM NUMBER:		22777533

    	BUSINESS ADDRESS:
    		STREET 1:		16 LINCOLN SQUARE
    		STREET 2:		P O BOX 3129
    		CITY:			GETTYSBURG
    		STATE:			PA
    		ZIP:			17325
    		BUSINESS PHONE:		7173343161

    	MAIL ADDRESS:
    		STREET 1:		P O BOX 3129
    		STREET 2:		16 LINCOLN SQUARE
    		CITY:			GETTYSBURG
    		STATE:			PA
    		ZIP:			17325
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEF 14A
    <SEQUENCE>1
    <FILENAME>tm223400-1_def14a.htm
    <DESCRIPTION>DEF 14A
    <TEXT>
    Document 1 - file: tm223400-1_def14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>lg_acnb-bw.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 2 - file: lg_acnb-bw.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>sg_jamesphelt-bw.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: sg_jamesphelt-bw.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>tm223400d1-px_01proxybw.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 4 - file: tm223400d1-px_01proxybw.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>tm223400d1-px_02proxybw.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: tm223400d1-px_02proxybw.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>tm223400d1-px_03proxybw.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: tm223400d1-px_03proxybw.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>tm223400d1-px_04proxybw.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: tm223400d1-px_04proxybw.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>