<SEC-DOCUMENT>0001104659-16-160128-index.html : 20161201
<SEC-HEADER>0001104659-16-160128.hdr.sgml : 20161201
<ACCEPTANCE-DATETIME>20161201162351
ACCESSION NUMBER:		0001104659-16-160128
CONFORMED SUBMISSION TYPE:	N-CSR
PUBLIC DOCUMENT COUNT:		15
CONFORMED PERIOD OF REPORT:	20160930
FILED AS OF DATE:		20161201
DATE AS OF CHANGE:		20161201
EFFECTIVENESS DATE:		20161201

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-CSR
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-06565
		FILM NUMBER:		162028570

	BUSINESS ADDRESS:	
		STREET 1:		100 FEDERAL STREET
		STREET 2:		19TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02110
		BUSINESS PHONE:		6177728515

	MAIL ADDRESS:	
		STREET 1:		100 FEDERAL STREET
		STREET 2:		19TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02110

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	H&Q LIFE SCIENCES INVESTORS
		DATE OF NAME CHANGE:	19920929
</SEC-HEADER>
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Document 1 - file: a16-19227_1ncsr.htm

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Document 2 - file: a16-19227_1ex99dcodeeth.htm

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<FILENAME>a16-19227_1ex99dcert.htm
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Document 3 - file: a16-19227_1ex99dcert.htm

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Document 4 - file: a16-19227_1ex99dsection19a.htm

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Document 6 - file: j16192272_aa001.jpg

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Document 7 - file: j16192272_aa002.jpg

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Document 8 - file: j16192272_aa003.jpg

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Document 9 - file: j16192272_ba001.jpg

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Document 10 - file: j16192272_ba002.jpg

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Document 11 - file: j16192272_ba003.jpg

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Document 12 - file: j16192272_ba004.jpg

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Document 13 - file: j16192272_ba005.jpg

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Document 14 - file: j16192272_ba006.jpg

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Document 15 - file: j16192272_ba007.jpg

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