Gary J. Gates is an American demographer and the Blachford-Cooper Distinguished Scholar at the UCLA School of Law's Williams Institute, of which he is also the research director. He is an expert on the demography of LGBT populations in the United States. Prior to becoming a demographer, he worked as a software engineer and seminarian.
Gates is the co-author of the 2004 book The Gay and Lesbian Atlas. In 2013, he wrote an amicus brief for the Supreme Court of the United States case United States v. Windsor in which he outlined a number of statistics about same-sex couples in the United States. According to the Washington Post, one of these statistics was that "about one in five gay and lesbian couples are raising children under age 18".
- "Williams Institute's Gary Gates, Blachford-Cooper Distinguished Scholar and Research Director". UCLA Newsroom. 23 April 2015. Retrieved 16 July 2016.
- Morello, Carol (1 March 2013). "Demographic research on lesbians and gays emerges from shadows". Washington Post. Retrieved 16 July 2016.
- "Gary J. Gates". UCLA School of Law. Retrieved 16 July 2016.
- Stewart, James B. (12 May 2012). "Gay Marriage Bans May Come at a Price". New York Times. Retrieved 16 July 2016.