<SEC-DOCUMENT>0001193125-19-102694-index.html : 20190410
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<ACCEPTANCE-DATETIME>20190410143013
ACCESSION NUMBER:		0001193125-19-102694
CONFORMED SUBMISSION TYPE:	497
PUBLIC DOCUMENT COUNT:		15
FILED AS OF DATE:		20190410
DATE AS OF CHANGE:		20190410
EFFECTIVENESS DATE:		20190410

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Natixis Funds Trust I
		CENTRAL INDEX KEY:			0000770540
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		497
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	002-98326
		FILM NUMBER:		19741481

	BUSINESS ADDRESS:	
		STREET 1:		888 BOYLSTON STREET
		STREET 2:		8TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199
		BUSINESS PHONE:		617-449-2810

	MAIL ADDRESS:	
		STREET 1:		888 BOYLSTON STREET
		STREET 2:		8TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	IXIS Advisor Funds Trust I
		DATE OF NAME CHANGE:	20050502

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CDC NVEST FUNDS TRUST I
		DATE OF NAME CHANGE:	20010503

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NVEST FUNDS TRUST I
		DATE OF NAME CHANGE:	20000202
<SERIES-AND-CLASSES-CONTRACTS-DATA>
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<SERIES>
<OWNER-CIK>0000770540
<SERIES-ID>S000053352
<SERIES-NAME>Mirova Global Sustainable Equity Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000167845
<CLASS-CONTRACT-NAME>Class A
<CLASS-CONTRACT-TICKER-SYMBOL>ESGMX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000167846
<CLASS-CONTRACT-NAME>Class C
<CLASS-CONTRACT-TICKER-SYMBOL>ESGCX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000167847
<CLASS-CONTRACT-NAME>Class Y
<CLASS-CONTRACT-TICKER-SYMBOL>ESGYX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000188563
<CLASS-CONTRACT-NAME>Class T
<CLASS-CONTRACT-TICKER-SYMBOL>ETSGX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000190736
<CLASS-CONTRACT-NAME>Class N
<CLASS-CONTRACT-TICKER-SYMBOL>ESGNX
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0000770540
<SERIES-ID>S000056426
<SERIES-NAME>Mirova Global Green Bond Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000178444
<CLASS-CONTRACT-NAME>Class A
<CLASS-CONTRACT-TICKER-SYMBOL>MGGAX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000178445
<CLASS-CONTRACT-NAME>Class N
<CLASS-CONTRACT-TICKER-SYMBOL>MGGNX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000178446
<CLASS-CONTRACT-NAME>Class Y
<CLASS-CONTRACT-TICKER-SYMBOL>MGGYX
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<SERIES>
<OWNER-CIK>0000770540
<SERIES-ID>S000063873
<SERIES-NAME>Mirova International Sustainable Equity Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000206846
<CLASS-CONTRACT-NAME>Class N
<CLASS-CONTRACT-TICKER-SYMBOL>MRVNX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000206847
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<CLASS-CONTRACT-TICKER-SYMBOL>MRVYX
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<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000206848
<CLASS-CONTRACT-NAME>Class A
<CLASS-CONTRACT-TICKER-SYMBOL>MRVAX
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</SERIES-AND-CLASSES-CONTRACTS-DATA>
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<TYPE>497
<SEQUENCE>1
<FILENAME>d670083d497.htm
<DESCRIPTION>NATIXIS FUNDS TRUST I
<TEXT>
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<TYPE>EX-101.INS
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<TYPE>EX-101.PRE
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