<SEC-DOCUMENT>0001171843-18-003185-index.html : 20180430
<SEC-HEADER>0001171843-18-003185.hdr.sgml : 20180430
<ACCEPTANCE-DATETIME>20180430160659
ACCESSION NUMBER:		0001171843-18-003185
CONFORMED SUBMISSION TYPE:	S-3
PUBLIC DOCUMENT COUNT:		6
FILED AS OF DATE:		20180430
DATE AS OF CHANGE:		20180430

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			HARVARD BIOSCIENCE INC
		CENTRAL INDEX KEY:			0001123494
		STANDARD INDUSTRIAL CLASSIFICATION:	LABORATORY ANALYTICAL INSTRUMENTS [3826]
		IRS NUMBER:				043306140
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-3
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-224535
		FILM NUMBER:		18789705

	BUSINESS ADDRESS:	
		STREET 1:		84 OCTOBER HILL RD
		CITY:			HOLLISTON
		STATE:			MA
		ZIP:			01746
		BUSINESS PHONE:		5088938999

	MAIL ADDRESS:	
		STREET 1:		84 OCTOBER HILL ROAD
		CITY:			HOLLISTON
		STATE:			MA
		ZIP:			01746
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-3
<SEQUENCE>1
<FILENAME>s3_043018.htm
<DESCRIPTION>FORM S-3
<TEXT>
Document 1 - file: s3_043018.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>exh_51.htm
<DESCRIPTION>EXHIBIT 5.1
<TEXT>
Document 2 - file: exh_51.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.2
<SEQUENCE>3
<FILENAME>exh_232.htm
<DESCRIPTION>EXHIBIT 23.2
<TEXT>
Document 3 - file: exh_232.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.3
<SEQUENCE>4
<FILENAME>exh_233.htm
<DESCRIPTION>EXHIBIT 23.3
<TEXT>
Document 4 - file: exh_233.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.4
<SEQUENCE>5
<FILENAME>exh_234.htm
<DESCRIPTION>EXHIBIT 23.4
<TEXT>
Document 5 - file: exh_234.htm

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

</DOCUMENT>
</SEC-DOCUMENT>