<SEC-DOCUMENT>0001104659-15-014154-index.html : 20150226
<SEC-HEADER>0001104659-15-014154.hdr.sgml : 20150226
<ACCEPTANCE-DATETIME>20150226095534
ACCESSION NUMBER:		0001104659-15-014154
CONFORMED SUBMISSION TYPE:	N-Q
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20141231
FILED AS OF DATE:		20150226
DATE AS OF CHANGE:		20150226
EFFECTIVENESS DATE:		20150226

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TEKLA LIFE SCIENCES INVESTORS
		CENTRAL INDEX KEY:			0000884121
		IRS NUMBER:				043147016
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			0930

	FILING VALUES:
		FORM TYPE:		N-Q
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-06565
		FILM NUMBER:		15650635

	BUSINESS ADDRESS:	
		STREET 1:		2 LIBERTY SQUARE
		STREET 2:		9TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02109
		BUSINESS PHONE:		6177728515

	MAIL ADDRESS:	
		STREET 1:		2 LIBERTY SQUARE
		STREET 2:		9TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02109

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	H&Q LIFE SCIENCES INVESTORS
		DATE OF NAME CHANGE:	19920929
</SEC-HEADER>
<DOCUMENT>
<TYPE>N-Q
<SEQUENCE>1
<FILENAME>a15-1237_2nq.htm
<DESCRIPTION>N-Q
<TEXT>
Document 1 - file: a15-1237_2nq.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CERT
<SEQUENCE>2
<FILENAME>a15-1237_2ex99dcert.htm
<DESCRIPTION>EX-99.CERT
<TEXT>
Document 2 - file: a15-1237_2ex99dcert.htm

</DOCUMENT>
</SEC-DOCUMENT>