<SEC-DOCUMENT>0001193125-19-062199-index.html : 20190304
<SEC-HEADER>0001193125-19-062199.hdr.sgml : 20190304
<ACCEPTANCE-DATETIME>20190304141149
ACCESSION NUMBER:		0001193125-19-062199
CONFORMED SUBMISSION TYPE:	N-CSR
PUBLIC DOCUMENT COUNT:		20
CONFORMED PERIOD OF REPORT:	20181231
FILED AS OF DATE:		20190304
DATE AS OF CHANGE:		20190304
EFFECTIVENESS DATE:		20190304

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:		N-CSR
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-04323
		FILM NUMBER:		19653090

	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>
<EXISTING-SERIES-AND-CLASSES-CONTRACTS>
<SERIES>
<OWNER-CIK>0000770540
<SERIES-ID>S000006657
<SERIES-NAME>Loomis Sayles Multi-Asset Income Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000018159
<CLASS-CONTRACT-NAME>Class A
<CLASS-CONTRACT-TICKER-SYMBOL>IIDPX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000018160
<CLASS-CONTRACT-NAME>Class C
<CLASS-CONTRACT-TICKER-SYMBOL>CIDPX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000123285
<CLASS-CONTRACT-NAME>Class Y
<CLASS-CONTRACT-TICKER-SYMBOL>YIDPX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000159732
<CLASS-CONTRACT-NAME>Class N
<CLASS-CONTRACT-TICKER-SYMBOL>LMINX
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0000770540
<SERIES-ID>S000006658
<SERIES-NAME>Natixis U.S. Equity Opportunities Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000018161
<CLASS-CONTRACT-NAME>Class A
<CLASS-CONTRACT-TICKER-SYMBOL>NEFSX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000018163
<CLASS-CONTRACT-NAME>Class C
<CLASS-CONTRACT-TICKER-SYMBOL>NECCX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000018164
<CLASS-CONTRACT-NAME>Class Y
<CLASS-CONTRACT-TICKER-SYMBOL>NESYX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000190732
<CLASS-CONTRACT-NAME>Class N
<CLASS-CONTRACT-TICKER-SYMBOL>NESNX
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0000770540
<SERIES-ID>S000006661
<SERIES-NAME>Vaughan Nelson Small Cap Value Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000018172
<CLASS-CONTRACT-NAME>Class A
<CLASS-CONTRACT-TICKER-SYMBOL>NEFJX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000018174
<CLASS-CONTRACT-NAME>Class C
<CLASS-CONTRACT-TICKER-SYMBOL>NEJCX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000069268
<CLASS-CONTRACT-NAME>Class Y
<CLASS-CONTRACT-TICKER-SYMBOL>NEJYX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000190733
<CLASS-CONTRACT-NAME>Class N
<CLASS-CONTRACT-TICKER-SYMBOL>VSCNX
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0000770540
<SERIES-ID>S000030606
<SERIES-NAME>Natixis Oakmark International Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000094872
<CLASS-CONTRACT-NAME>Class A
<CLASS-CONTRACT-TICKER-SYMBOL>NOIAX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000094873
<CLASS-CONTRACT-NAME>Class C
<CLASS-CONTRACT-TICKER-SYMBOL>NOICX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000190734
<CLASS-CONTRACT-NAME>Class N
<CLASS-CONTRACT-TICKER-SYMBOL>NIONX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000190735
<CLASS-CONTRACT-NAME>Class Y
<CLASS-CONTRACT-TICKER-SYMBOL>NOIYX
</CLASS-CONTRACT>
</SERIES>
<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>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
</CLASS-CONTRACT>
</SERIES>
<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
<CLASS-CONTRACT-NAME>Class Y
<CLASS-CONTRACT-TICKER-SYMBOL>MRVYX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000206848
<CLASS-CONTRACT-NAME>Class A
<CLASS-CONTRACT-TICKER-SYMBOL>MRVAX
</CLASS-CONTRACT>
</SERIES>
</EXISTING-SERIES-AND-CLASSES-CONTRACTS>
</SERIES-AND-CLASSES-CONTRACTS-DATA>
</SEC-HEADER>
<DOCUMENT>
<TYPE>N-CSR
<SEQUENCE>1
<FILENAME>d653644dncsr.htm
<DESCRIPTION>NATIXIS FUNDS TRUST I
<TEXT>
Document 1 - file: d653644dncsr.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.CODEETH <SEQUENCE>2 <FILENAME>d653644dex99codeeth.htm <DESCRIPTION>CODE OF ETHICS <TEXT> Document 2 - file: d653644dex99codeeth.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.CERT <SEQUENCE>3 <FILENAME>d653644dex99cert.htm <DESCRIPTION>SECTION 302 CERTIFICATIONS <TEXT> Document 3 - file: d653644dex99cert.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.906CERT <SEQUENCE>4 <FILENAME>d653644dex99906cert.htm <DESCRIPTION>SECTION 906 CERTIFICATIONS <TEXT> Document 4 - file: d653644dex99906cert.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>5 <FILENAME>g633852g21i66.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 5 - file: g633852g21i66.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>6 <FILENAME>g633852g24v74.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 6 - file: g633852g24v74.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>7 <FILENAME>g633852g33b46.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 7 - file: g633852g33b46.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>8 <FILENAME>g633852g35w13.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 8 - file: g633852g35w13.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>9 <FILENAME>g633852g36c78.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 9 - file: g633852g36c78.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>10 <FILENAME>g633852g66s90.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 10 - file: g633852g66s90.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>11 <FILENAME>g633852g90y61.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 11 - file: g633852g90y61.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>12 <FILENAME>g644819g24v74.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 12 - file: g644819g24v74.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>13 <FILENAME>g644819g66s90.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 13 - file: g644819g66s90.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>14 <FILENAME>g644819g76v14.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 14 - file: g644819g76v14.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>15 <FILENAME>g644819g85t37.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 15 - file: g644819g85t37.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>16 <FILENAME>g667314g18n63.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 16 - file: g667314g18n63.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>17 <FILENAME>g667314g24v74.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 17 - file: g667314g24v74.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>18 <FILENAME>g667314g66s90.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 18 - file: g667314g66s90.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>19 <FILENAME>g667314g74f99.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 19 - file: g667314g74f99.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>20 <FILENAME>g667314g81q56.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 20 - file: g667314g81q56.jpg
</DOCUMENT> </SEC-DOCUMENT>