497

NATIXIS FUNDS TRUST II

December 10, 2012

Via EDGAR

Securities and Exchange Commission

100 F Street, NE

Washington, DC 20549

Re: Natixis Funds Trust II

(File Nos.: 002-11101 and 811-00242)

Dear Sir or Madam:

On behalf of Natixis Funds Trust II, transmitted for filing, pursuant to Rule 497(e) under the Securities Act of 1933, are exhibits containing interactive data format risk/return summary information for the ASG Diversifying Strategies Fund (the “Fund”). These exhibits contain the amended risk/return summary information in the prospectus for the Fund dated May 1, 2012, supplemented as of November 19, 2012, as filed under Rule 497(e) on November 19, 2012.

Please direct any questions on the enclosed materials to me at (617) 449-2818.

Very truly yours,

/s/ John DelPrete

John DelPrete

Assistant Secretary

Natixis Funds Trust II

Exhibit Index

Exhibits for Item 28 of Form N-1A

Exhibit	Exhibit Description
EX-101.INS	XBRL Instance Document
EX-101.CAL	XBRL Taxonomy Extension Calculation Linkbase
EX-101.DEF	XBRL Taxonomy Extension Definition Linkbase
EX-101.LAB	XBRL Taxonomy Extension Labels Linkbase
EX-101.PRE	XBRL Taxonomy Extension Presentation Linkbase

XML

ASG DIVERSIFYING STRATEGIES FUND

Supplement dated November 19, 2012 to the ASG Diversifying Strategies Fund Summary Prospectus and Prospectus, each dated May 1, 2012, as each may be revised and supplemented from time to time.

Effective immediately, the Barclay Fund of Funds Index will replace the HFRI Fund of Funds Composite Index as the ASG Diversifying Strategies Fund's secondary benchmark. The 3-month London Interbank Offered Rate (LIBOR) will remain as the Fund's primary benchmark.

Effective immediately, the "Average Annual Total Returns" chart and the corresponding footnote in the Fund's Summary Prospectus is amended and restated as follows:

Average Annual Total Returns (for the periods ended December 31, 2011)	Past 1 Year			Life of Fund (8/3/09)
ASG Diversifying Strategies Fund Class A – Return Before Taxes		-8.36	%		2.70	%
Return After Taxes on Distributions		-9.66	%		0.79	%
Return After Taxes on Distributions & Sale of Fund Shares		-5.44	%		1.34	%
Class C – Return Before Taxes		-4.37	%		4.44	%
Class Y – Return Before Taxes		-2.48	%		5.46	%
3-month London Interbank Offered Rate (LIBOR) (Calculated from August 1, 2009)1		0.27	%		0.33	%
Barclay Fund of Funds Index (Calculated from August 1, 2009)2		-6.22	%		1.04	%
HFRI Fund of Funds Composite Index (Calculated from August 1, 2009)		-5.72	%		1.63	%

1 Prior to May 1, 2012, the Fund's prospectus listed the Fund's primary benchmark as HFRI Fund of Funds Composite Index, an unmanaged, equally-weighted hedge fund index. As of May 1, 2012 3-month London Interbank Offered Rate (LIBOR) is listed as the Fund's primary benchmark because AlphaSimplex believes that 3-month LIBOR provides an appropriate comparison in light of the Fund's absolute return strategy.

2 Effective November 19, 2012 the Barclay Fund of Funds Index replaced the HFRI Fund of Funds Composite Index as the Fund's secondary benchmark because AlphaSimplex believes the index is an appropriate representation of hedge fund industry performance. 

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

Natixis Funds Trust II

Prospectus Date

rr_ProspectusDate

May 01, 2012

Supplement [Text Block]

nft5_SupplementTextBlock

ASG DIVERSIFYING STRATEGIES FUND

Supplement dated November 19, 2012 to the ASG Diversifying Strategies Fund Summary Prospectus and Prospectus, each dated May 1, 2012, as each may be revised and supplemented from time to time.

Effective immediately, the Barclay Fund of Funds Index will replace the HFRI Fund of Funds Composite Index as the ASG Diversifying Strategies Fund's secondary benchmark. The 3-month London Interbank Offered Rate (LIBOR) will remain as the Fund's primary benchmark.

Effective immediately, the "Average Annual Total Returns" chart and the corresponding footnote in the Fund's Summary Prospectus is amended and restated as follows:

Average Annual Total Returns (for the periods ended December 31, 2011)	Past 1 Year			Life of Fund (8/3/09)
ASG Diversifying Strategies Fund Class A – Return Before Taxes		-8.36	%		2.70	%
Return After Taxes on Distributions		-9.66	%		0.79	%
Return After Taxes on Distributions & Sale of Fund Shares		-5.44	%		1.34	%
Class C – Return Before Taxes		-4.37	%		4.44	%
Class Y – Return Before Taxes		-2.48	%		5.46	%
3-month London Interbank Offered Rate (LIBOR) (Calculated from August 1, 2009)1		0.27	%		0.33	%
Barclay Fund of Funds Index (Calculated from August 1, 2009)2		-6.22	%		1.04	%
HFRI Fund of Funds Composite Index (Calculated from August 1, 2009)		-5.72	%		1.63	%

1 Prior to May 1, 2012, the Fund's prospectus listed the Fund's primary benchmark as HFRI Fund of Funds Composite Index, an unmanaged, equally-weighted hedge fund index. As of May 1, 2012 3-month London Interbank Offered Rate (LIBOR) is listed as the Fund's primary benchmark because AlphaSimplex believes that 3-month LIBOR provides an appropriate comparison in light of the Fund's absolute return strategy.

2 Effective November 19, 2012 the Barclay Fund of Funds Index replaced the HFRI Fund of Funds Composite Index as the Fund's secondary benchmark because AlphaSimplex believes the index is an appropriate representation of hedge fund industry performance. 

ASG Diversifying Strategies Fund

Risk/Return:

rr_RiskReturnAbstract

Supplement [Text Block]

nft5_SupplementTextBlock

ASG DIVERSIFYING STRATEGIES FUND

Supplement dated November 19, 2012 to the ASG Diversifying Strategies Fund Summary Prospectus and Prospectus, each dated May 1, 2012, as each may be revised and supplemented from time to time.

Effective immediately, the Barclay Fund of Funds Index will replace the HFRI Fund of Funds Composite Index as the ASG Diversifying Strategies Fund's secondary benchmark. The 3-month London Interbank Offered Rate (LIBOR) will remain as the Fund's primary benchmark.

Effective immediately, the "Average Annual Total Returns" chart and the corresponding footnote in the Fund's Summary Prospectus is amended and restated as follows:

Average Annual Total Returns (for the periods ended December 31, 2011)	Past 1 Year			Life of Fund (8/3/09)
ASG Diversifying Strategies Fund Class A – Return Before Taxes		-8.36	%		2.70	%
Return After Taxes on Distributions		-9.66	%		0.79	%
Return After Taxes on Distributions & Sale of Fund Shares		-5.44	%		1.34	%
Class C – Return Before Taxes		-4.37	%		4.44	%
Class Y – Return Before Taxes		-2.48	%		5.46	%
3-month London Interbank Offered Rate (LIBOR) (Calculated from August 1, 2009)1		0.27	%		0.33	%
Barclay Fund of Funds Index (Calculated from August 1, 2009)2		-6.22	%		1.04	%
HFRI Fund of Funds Composite Index (Calculated from August 1, 2009)		-5.72	%		1.63	%

1 Prior to May 1, 2012, the Fund's prospectus listed the Fund's primary benchmark as HFRI Fund of Funds Composite Index, an unmanaged, equally-weighted hedge fund index. As of May 1, 2012 3-month London Interbank Offered Rate (LIBOR) is listed as the Fund's primary benchmark because AlphaSimplex believes that 3-month LIBOR provides an appropriate comparison in light of the Fund's absolute return strategy.

2 Effective November 19, 2012 the Barclay Fund of Funds Index replaced the HFRI Fund of Funds Composite Index as the Fund's secondary benchmark because AlphaSimplex believes the index is an appropriate representation of hedge fund industry performance. 

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns (for the periods ended December 31, 2011)

ASG Diversifying Strategies Fund | Class A

Risk/Return:

rr_RiskReturnAbstract

Past 1 Year

rr_AverageAnnualReturnYear01

(8.36%)

Life of Fund

rr_AverageAnnualReturnSinceInception

2.70%

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 03, 2009

ASG Diversifying Strategies Fund | Class C

Risk/Return:

rr_RiskReturnAbstract

Past 1 Year

rr_AverageAnnualReturnYear01

(4.37%)

Life of Fund

rr_AverageAnnualReturnSinceInception

4.44%

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 03, 2009

ASG Diversifying Strategies Fund | Class Y

Risk/Return:

rr_RiskReturnAbstract

Past 1 Year

rr_AverageAnnualReturnYear01

(2.48%)

Life of Fund

rr_AverageAnnualReturnSinceInception

5.46%

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 03, 2009

ASG Diversifying Strategies Fund | Return After Taxes on Distributions | Class A

Risk/Return:

rr_RiskReturnAbstract

Past 1 Year

rr_AverageAnnualReturnYear01

(9.66%)

Life of Fund

rr_AverageAnnualReturnSinceInception

0.79%

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 03, 2009

ASG Diversifying Strategies Fund | Return After Taxes on Distributions & Sale of Fund Shares | Class A

Risk/Return:

rr_RiskReturnAbstract

Past 1 Year

rr_AverageAnnualReturnYear01

(5.44%)

Life of Fund

rr_AverageAnnualReturnSinceInception

1.34%

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 03, 2009

ASG Diversifying Strategies Fund | 3-month London Interbank Offered Rate (LIBOR)

Risk/Return:

rr_RiskReturnAbstract

Past 1 Year

rr_AverageAnnualReturnYear01

0.27%

^[1]

Life of Fund

rr_AverageAnnualReturnSinceInception

0.33%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 01, 2009

ASG Diversifying Strategies Fund | Barclay Fund of Funds Index

Risk/Return:

rr_RiskReturnAbstract

Past 1 Year

rr_AverageAnnualReturnYear01

(6.22%)

^[2]

Life of Fund

rr_AverageAnnualReturnSinceInception

1.04%

^[2]

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 01, 2009

ASG Diversifying Strategies Fund | HFRI Fund of Funds Composite Index

Risk/Return:

rr_RiskReturnAbstract

Past 1 Year

rr_AverageAnnualReturnYear01

(5.72%)

Life of Fund

rr_AverageAnnualReturnSinceInception

1.63%

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 01, 2009

[1] Prior to May 1, 2012, the Fund's prospectus listed the Fund's primary benchmark as HFRI Fund of Funds Composite Index, an unmanaged, equally-weighted hedge fund index. As of May 1, 2012 3-month London Interbank Offered Rate (LIBOR) is listed as the Fund's primary benchmark because AlphaSimplex believes that 3-month LIBOR provides an appropriate comparison in light of the Fund's absolute return strategy.

[2] Effective November 19, 2012 the Barclay Fund of Funds Index replaced the HFRI Fund of Funds Composite Index as the Fund's secondary benchmark because AlphaSimplex believes the index is an appropriate representation of hedge fund industry performance.

XML

Document and Entity Information	12 Months Ended
	May 01, 2012
Risk/Return:
Document Type	Other
Document Period End Date	Dec. 31, 2011
Registrant Name	Natixis Funds Trust II
Central Index Key	0000052136
Amendment Flag	false
Document Creation Date	Nov. 19, 2012
Document Effective Date	Nov. 19, 2012
Prospectus Date	May 01, 2012

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Natixis Funds Trust II
Prospectus Date	rr_ProspectusDate	May 01, 2012
Document Creation Date	dei_DocumentCreationDate	Nov. 19, 2012