The Don't Ask, Don't Tell Repeal Act of 2010 (H.R. 2965, S. 4023) is a landmark United States federal statute enacted in December 2010 that established a process for ending the "don't ask, don't tell" (DADT) policy (10 U.S.C. § 654), thus allowing gay, lesbian, and bisexual people to serve openly in the United States Armed Forces. It ended the policy in place since 1993 that allowed them to serve only if they kept their sexual orientation secret and the military did not learn of their sexual orientation, which was controversial.The Act established a process for ending the "don't ask, don't tell" policy.

The Act did not ban discrimination on the basis of sexual orientation in the military, as provided for in the proposed Military Readiness Enhancement Act.

President Barack Obama, Defense Secretary Leon Panetta, and Chairman of the Joint Chiefs of Staff Admiral Mike Mullen provided the certification required by the Act to Congress on July 22, 2011. Implementation of repeal was completed 60 days later, so that DADT was no longer policy as of September 20, 2011.