Susan O'Neal Stryker (born 1961)[3] is an American professor, historian, author, filmmaker, and theorist whose work focuses on gender and human sexuality.

She earned a Ph.D. in United States History at the University of California, Berkeley in 1992;[6] the doctoral thesis she presented was Making Mormonism: A Critical and Historical Analysis of Cultural Formation.

In 2007-8 she held the Ruth Wynn Woodward Endowed Visiting Professorship in Women's Studies at Simon Fraser University in Vancouver, Canada.

[15] In 2015, Yale University awarded Stryker the James Robert Brudner Class of 1983 Memorial Prize for lifetime accomplishment and scholarly contributions in the field of lesbian and gay studies.

[16][17] Among her other honors are a Community Vanguard Award from the Transgender Law Center, and recognition as a "Local Hero" by San Francisco public television station KQED.

[16] In 2014, Stryker gave the keynote speech at the first Moving Trans History Forward conference, organized by the Chair in Transgender Studies, Aaron Devor, and held at the University of Victoria.

[18] She is currently on leave from the University of Arizona while holding an appointment as Barbara Lee Distinguished Chair in Women's Leadership at Mills College.

With director Michelle Lawler and executive producer Kim Klausner she subsequently co-produced Forever's Gonna Start Tonight (2009), a documentary film about Vicki Marlane, an HIV-positive, transgender performer at nightclubs and lounges.

In 2021, Stryker appeared and served as a consulting producer on The Lady and the Dale, an HBO documentary series revolving around Elizabeth Carmichael, the founder of Twentieth Century Motor Car Corporation.