dei_EntityRegistrantName

Natixis Funds Trust II

cik0000052136_SupplementTextBlock

NATIXIS FUNDS

Supplement dated June 24, 2011 to the Class A, Class C and Class Y Prospectuses, each dated May 1, 2011, as may be revised or supplemented from time to time for the following funds:

ASG Diversifying Strategies Fund

Effective immediately, the Annual Fund Operating Expenses table under the section "Fund Fees & Expenses" in the ASG Diversifying Strategies Fund Class AC Fund Summary is amended as follows:


Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)	Class A			Class C
Management fees		1.25	%		1.25	%
Distribution and/or service (12b-1) fees		0.25	%		1.00	%
Other expenses (restated to reflect current expenses)		0.49	%		0.41	%
Total annual fund operating expenses		1.99	%		2.66	%
Fee waiver and/or expense reimbursement¹		0.25	%		0.17	%
Total annual fund operating expenses after fee waiver and/or expense reimbursement		1.74	%		2.49	%

1 AlphaSimplex Group, LLC (the "Adviser") has given a binding contractual undertaking to the Fund to limit the amount of the Fund's total annual fund operating expenses to 1.70% and 2.45% of the Fund's average daily net assets for Class A and C shares, respectively, exclusive of organizational expenses, brokerage expenses, interest expense, taxes and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2012 and may be terminated before then only with the consent of the Fund's Board of Trustees. The Fund's Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below 1.70% and 2.45% of the Fund's average daily net assets for Class A and C shares, respectively. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fee/expense was waived/reimbursed.

Effective immediately, the Example table under the section "Fund Fees & Expenses" in the ASG Diversifying Strategies Fund Class AC Fund Summary is amended as follows:


	Class A		Class C
			If shares are redeemed		If shares are not redeemed
1 year	$	742	$	352	$	252
3 years	$	1,141	$	810	$	810
5 years	$	1,564	$	1,395	$	1,395
10 years	$	2,740	$	2,980	$	2,980

Effective immediately, the following sentence is added under the bar chart in the sub-section "Risk/Return Bar Chart and Table" within the section "Investments, Risks and Performance" with regard to the ASG Diversifying Strategies Fund Class AC Fund Summary:

The Fund's Class A shares total return year to date as of March 31, 2011 was -0.86%.

Effective immediately, the Annual Fund Operating Expenses table under the section "Fund Fees & Expenses" in the ASG Diversifying Strategies Fund Class Y Fund Summary is amended as follows:


Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)	Class Y
Management fees		1.25	%
Other expenses (restated to reflect current expenses)		0.58	%
Total annual fund operating expenses		1.83	%
Fee waiver and/or expense reimbursement¹		0.34	%
Total annual fund operating expenses after fee waiver and/or expense reimbursement		1.49	%

1 AlphaSimplex Group, LLC (the "Adviser") has given a binding contractual undertaking to the Fund to limit the amount of the Fund's total annual fund operating expenses to 1.45% of the Fund's average daily net assets for Class Y shares, exclusive of organizational expenses, brokerage expenses, interest expense, taxes and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2012 and may be terminated before then only with the consent of the Fund's Board of Trustees. The Fund's Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below 1.45% of the Fund's average daily net assets for Class Y shares. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fee/expense was waived/reimbursed.

Effective immediately, the Example table under the section "Fund Fees & Expenses" in the ASG Diversifying Strategies Fund Class Y Fund Summary is amended as follows:


	Class Y
1 year	$	152
3 years	$	543
5 years	$	959
10 years	$	2,120

Effective immediately, the following sentence is added under the bar chart in the sub-section "Risk/Return Bar Chart and Table" within the section "Investments, Risks and Performance" with regard to the ASG Diversifying Strategies Fund Class Y Fund Summary:

The Fund's Class Y shares total return year to date as of March 31, 2011 was -0.76%.

Risk/Return:

rr_RiskReturnAbstract

Supplement [Text Block]

cik0000052136_SupplementTextBlock

Effective immediately, the Annual Fund Operating Expenses table under the section "Fund Fees & Expenses" in the ASG Diversifying Strategies Fund Class Y Fund Summary is amended as follows:


Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)	Class Y
Management fees		1.25	%
Other expenses (restated to reflect current expenses)		0.58	%
Total annual fund operating expenses		1.83	%
Fee waiver and/or expense reimbursement¹		0.34	%
Total annual fund operating expenses after fee waiver and/or expense reimbursement		1.49	%

1 AlphaSimplex Group, LLC (the "Adviser") has given a binding contractual undertaking to the Fund to limit the amount of the Fund's total annual fund operating expenses to 1.45% of the Fund's average daily net assets for Class Y shares, exclusive of organizational expenses, brokerage expenses, interest expense, taxes and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2012 and may be terminated before then only with the consent of the Fund's Board of Trustees. The Fund's Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below 1.45% of the Fund's average daily net assets for Class Y shares. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fee/expense was waived/reimbursed.

Effective immediately, the Example table under the section "Fund Fees & Expenses" in the ASG Diversifying Strategies Fund Class Y Fund Summary is amended as follows:


	Class Y
1 year	$	152
3 years	$	543
5 years	$	959
10 years	$	2,120

Effective immediately, the following sentence is added under the bar chart in the sub-section "Risk/Return Bar Chart and Table" within the section "Investments, Risks and Performance" with regard to the ASG Diversifying Strategies Fund Class Y Fund Summary:

The Fund's Class Y shares total return year to date as of March 31, 2011 was -0.76%.