Lambda Legal works to achieve full recognition of rights, including marriage, for LGBT people.

The New York City-based organization Freedom to Marry is working to obtain same-sex marriage rights nationwide and to overturn the federal Defense of Marriage Act. Evan Wolfson is president.

The American Bar Association is the one of the largest voluntary professional membership organizations in the world.

The American Academy of Pediatrics is an organization of 60,000 pediatricians committed to the optimal physical, mental, and social health and well-being for all infants, children, adolescents, and young adults.

The Williams Institute focuses on sexual-orientation law and public policy, and its website has a number of resources on same-sex marriage. Scholars from the think tank, which is based at California’s UCLA law school, participated in friend-of-the-court briefs in both March 2013 cases before they went the Supreme Court.

The National Marriage Project at the University of Virginia conducts research and analysis on marriage issues. Brad Wilcox is director.

The Association of Welcoming & Affirming Baptists (AWAB) is a group of congregations, organizations and individual Baptists that support the full inclusion of LGBTQ people in the Baptist faith.

The United Church of Christ Coalition for Lesbian, Gay, Bisexual and Transgender Concerns advocates for the full inclusion of LGBT people in society and the UCC. Contact executive director Andy Lang.

Extraordinary Lutheran Ministries was formed in 1990 in resistance to ELCA’s policy on forcing celibacy on its gay clergy. Following the ELCA’s decision in 2009 to drop this policy, Extraordinary Lutheran Ministries continues to provide support for LGBTQ clergy. Contact executive director Amalia Vagts.