<SEC-DOCUMENT>0001104659-15-082434-index.html : 20151202
<SEC-HEADER>0001104659-15-082434.hdr.sgml : 20151202
<ACCEPTANCE-DATETIME>20151202150134
ACCESSION NUMBER:		0001104659-15-082434
CONFORMED SUBMISSION TYPE:	N-CSR
PUBLIC DOCUMENT COUNT:		12
CONFORMED PERIOD OF REPORT:	20150930
FILED AS OF DATE:		20151202
DATE AS OF CHANGE:		20151202
EFFECTIVENESS DATE:		20151202

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:		151264473

	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>
<DOCUMENT>
<TYPE>N-CSR
<SEQUENCE>1
<FILENAME>a15-21658_1ncsr.htm
<DESCRIPTION>N-CSR
<TEXT>
Document 1 - file: a15-21658_1ncsr.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CODEETH
<SEQUENCE>2
<FILENAME>a15-21658_1ex99dcodeeth.htm
<DESCRIPTION>EX-99.CODEETH
<TEXT>
Document 2 - file: a15-21658_1ex99dcodeeth.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CERT
<SEQUENCE>3
<FILENAME>a15-21658_1ex99dcert.htm
<DESCRIPTION>EX-99.CERT
<TEXT>
Document 3 - file: a15-21658_1ex99dcert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.SECTION 19(A)
<SEQUENCE>4
<FILENAME>a15-21658_1ex99dsection19a.htm
<DESCRIPTION>EX-99.SECTION 19(A)
<TEXT>
Document 4 - file: a15-21658_1ex99dsection19a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.906CERT
<SEQUENCE>5
<FILENAME>a15-21658_1ex99d906cert.htm
<DESCRIPTION>EX-99.906CERT
<TEXT>
Document 5 - file: a15-21658_1ex99d906cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>j15216582_ba005.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: j15216582_ba005.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>j15216582_ba006.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: j15216582_ba006.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>j15216582_ba007.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: j15216582_ba007.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>j15216582_ba008.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: j15216582_ba008.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>j15216582_aa002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 10 - file: j15216582_aa002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>j15216582_aa003.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 11 - file: j15216582_aa003.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>j15216582_aa004.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 12 - file: j15216582_aa004.jpg

</DOCUMENT>
</SEC-DOCUMENT>