497

EXPLANATORY NOTE

The XBRL interactive data file included as an exhibit to this filing relates to the Supplement dated December 10, 2012 to the GMO Strategic Opportunities Allocation Fund Prospectus dated June 30, 2012 filed with the Securities and Exchange Commission on December 10, 2012 under Rule 497(e) (SEC Accession No. 0001193125-12-496862).

EXHIBIT INDEX

GMO TRUST

Exhibit Ref.	Title of Exhibit
EX-101.INS	XBRL Instance Document
EX-101.SCH	XBRL Schema Document
EX-101.CAL	XBRL Calculation Linkbase Document
EX.101.LAB	XBRL Labels Linkbase Document
EX-101.PRE	XBRL Presentation Linkbase Document
EX.101.DEF	XBRL Definition Linkbase Document

XML

GMO TRUST

Amended and Restated Supplement dated December 10, 2012 to the
GMO Trust Multi-Class Prospectus and Statement of Additional Information,
each dated June 30, 2012

GMO Strategic Opportunities Allocation Fund

Effective December 31, 2012, the GMO Strategic Opportunities Allocation Fund (the "Fund") charges a purchase premium of 0.07% of the amount invested and a redemption fee of 0.07% of the amount redeemed. The section captioned "Shareholder fees" on page 136 of the Prospectus is replaced with the following:

Shareholder fees

(fees paid directly from your investment)

	Class III
Purchase premium (as a percentage of amount invested)		0.07	%
Redemption fee (as a percentage of amount redeemed)		0.07	%

In addition, the section captioned "Example" on page 136 is replaced with the following:

Example

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated. The example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same as those shown in the table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

	If you sell your shares								If you do not sell your shares
	1 Year*		3 Years		5 Years		10 Years		1 Year*		3 Years		5 Years		10 Years
Class III	$	59	$	188	$	328	$	737	$	66	$	196	$	337	$	748

* After reimbursement

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

GMO TRUST

Prospectus Date

rr_ProspectusDate

Jun. 30, 2012

Supplement [Text Block]

gmot5_SupplementTextBlock

GMO TRUST

Amended and Restated Supplement dated December 10, 2012 to the
GMO Trust Multi-Class Prospectus and Statement of Additional Information,
each dated June 30, 2012

GMO Strategic Opportunities Allocation Fund

Effective December 31, 2012, the GMO Strategic Opportunities Allocation Fund (the "Fund") charges a purchase premium of 0.07% of the amount invested and a redemption fee of 0.07% of the amount redeemed. The section captioned "Shareholder fees" on page 136 of the Prospectus is replaced with the following:

Shareholder fees

(fees paid directly from your investment)

	Class III
Purchase premium (as a percentage of amount invested)		0.07	%
Redemption fee (as a percentage of amount redeemed)		0.07	%

In addition, the section captioned "Example" on page 136 is replaced with the following:

Example

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated. The example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same as those shown in the table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

	If you sell your shares								If you do not sell your shares
	1 Year*		3 Years		5 Years		10 Years		1 Year*		3 Years		5 Years		10 Years
Class III	$	59	$	188	$	328	$	737	$	66	$	196	$	337	$	748

* After reimbursement

GMO Trust | GMO Strategic Opportunities Allocation Fund

Risk/Return:

rr_RiskReturnAbstract

Supplement [Text Block]

gmot5_SupplementTextBlock

GMO TRUST

Amended and Restated Supplement dated December 10, 2012 to the
GMO Trust Multi-Class Prospectus and Statement of Additional Information,
each dated June 30, 2012

GMO Strategic Opportunities Allocation Fund

Effective December 31, 2012, the GMO Strategic Opportunities Allocation Fund (the "Fund") charges a purchase premium of 0.07% of the amount invested and a redemption fee of 0.07% of the amount redeemed. The section captioned "Shareholder fees" on page 136 of the Prospectus is replaced with the following:

Shareholder fees

(fees paid directly from your investment)

	Class III
Purchase premium (as a percentage of amount invested)		0.07	%
Redemption fee (as a percentage of amount redeemed)		0.07	%

In addition, the section captioned "Example" on page 136 is replaced with the following:

Example

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated. The example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same as those shown in the table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

	If you sell your shares								If you do not sell your shares
	1 Year*		3 Years		5 Years		10 Years		1 Year*		3 Years		5 Years		10 Years
Class III	$	59	$	188	$	328	$	737	$	66	$	196	$	337	$	748

* After reimbursement

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder fees

(fees paid directly from your investment)

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated. The example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same as those shown in the table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

If you sell your shares

Expense Example, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

If you do not sell your shares

GMO Trust | GMO Strategic Opportunities Allocation Fund | Class III

Risk/Return:

rr_RiskReturnAbstract

Purchase premium (as a percentage of amount invested)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

0.07%

Redemption fee (as a percentage of amount redeemed)

rr_RedemptionFeeOverRedemption

0.07%

1 Year

rr_ExpenseExampleYear01

59

^[1]

3 Years

rr_ExpenseExampleYear03

188

5 Years

rr_ExpenseExampleYear05

328

10 Years

rr_ExpenseExampleYear10

737

1 Year

rr_ExpenseExampleNoRedemptionYear01

66

^[1]

3 Years

rr_ExpenseExampleNoRedemptionYear03

196

5 Years

rr_ExpenseExampleNoRedemptionYear05

337

10 Years

rr_ExpenseExampleNoRedemptionYear10

748

[1] After reimbursement

XML

Document and Entity Information	12 Months Ended
	Jun. 30, 2012
Risk/Return:
Document Type	Other
Document Period End Date	Feb. 29, 2012
Registrant Name	GMO TRUST
Central Index Key	0000772129
Amendment Flag	false
Document Creation Date	Dec. 10, 2012
Document Effective Date	Dec. 10, 2012
Prospectus Date	Jun. 30, 2012

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	GMO TRUST
Prospectus Date	rr_ProspectusDate	Jun. 30, 2012
Document Creation Date	dei_DocumentCreationDate	Dec. 10, 2012