- ACLU Lesbian and Gay Rights Project
- Alternatives to Marriage Project A national nonprofit advocating for equality and fairness for unmarried people, including people who choose not to marry, cannot marry, or live together before marriage
- Atticus Circle For our straight allies. Dedicated to achieving equality for all parents and partners
- Beyond Marriage
- Canadian Immigration for Same-Sex Partners
- Coalition for Adoption Rights Equality A children’s advocacy group working to secure the legal recognition of parent-child relationships in all families regardless of the parents’ marital status or sexual orientation.
- Council on Contemporary Families A nonprofit organization dedicated to enhancing the national conversation about what contemporary families need and how these needs can best be met.
- Equality Federation A federation of state LGBT organizations
- Families USA
- Family Equality Council Securing equality for LGBTQ parents, guardians, and allies
- Freedom to Marry
- Gay and Lesbian Alliance Against Defamation
- Gay and Lesbian Victory Fund
- Human Rights Campaign
- Immigration Equality A national organization that works to end discrimination in U.S. immigration law, to reduce the negative impact of that law on the lives of LGBT and HIV-positive people, and to help obtain asylum for those persecuted in their home country based on their s
- International Gay and Lesbian Human Rights Commission
- International Lesbian and Gay Law Association (ILGLaw)
- iPride Family Pride in Mixed Heritage. The nation’s the oldest multiracial justice organization. (Not LGBT specific.)
- Lambda Legal Defense and Education Fund
- Marriage Equality USA An all-volunteer, national non-profit organization whose mission is to secure legally recognized civil marriage equality for all, at the federal and state level, without regard to gender identity or sexual orientation.
- National Black Justice Coalition A civil rights organization dedicated to empowering Black, same-gender-loving, LGBT people.
- National Center for Lesbian Rights
- National Center for Lesbian Rights: Parenting Publications and Downloads Publications and downloads about legal aspects of LGBT parenting
- National Gay and Lesbian Task Force Parenting and Family Section
- Servicemembers Legal Defense Network
- Soulforce
- Stonewall
- The Wedding Party
- UK Lesbian and Gay Immigration Group A charity providing information and advice on immigration rights for same sex couples and support for lesbian & gay asylum seekers.
