Diane "Dee" Mosbacher, MD, Ph.D., (born January 13, 1949 in Houston, Texas) is an American filmmaker, lesbian feminist activist, and practicing psychiatrist. In 1993, she founded Woman Vision, a nonprofit organization to promote equal treatment of all people through the production and use of educational media, including video.
To date, Mosbacher has directed or produced nine documentary films through Woman Vision, each having to do with LGBTQ or women's rights issues. In 1994, she directed and produced Straight From the Heart, which was nominated for an Academy Award. Altogether, Mosbacher's films have received a total of 46 awards — by LGBT, Black, Latina, Latin American, and Aging Media film festivals, including best of show award, grand jury awards, and audience awards, in the US, the UK, Australia, Cuba, Mexico, and Italy.
In 2012, Woman Vision launched The Last Closet, a web-based campaign and video project to end homophobia in men's professional sports. The Dee Mosbacher and Woman Vision Papers, are archived in the Sophia Smith Collection, Smith College, Northampton, Mass.
Oscar nomination for Straight from the Heart
In 1995, Mosbacher co-directed and co-produced (with Frances Reid) Straight From the Heart, a documentary that explored relationships between heterosexual parents and their adult lesbian and gay children. The film includes emotional interviews with parents who felt conflicted between the teachings of their religious communities and their love of their lesbian daughters and gay sons. One couple discussed their disapproval of homosexuality until they learned that their son, who was dying of AIDS, was gay. The film was nominated for an Oscar 
In 2010, Mosbacher co-directed and co-produced with Fawn Yacker the documentary film Training Rules, an hour-long movie about Rene Portland, a women's basketball coach from Penn State University. Portland allegedly banned lesbians from playing on her team. The film contains interviews with former athletes and faculty members at Penn State who say that Portland actively pursued and harassed members of her team whom she suspected were gay.
Training Rules was shown at dozens of film festivals in the United States, Canada, and Europe, and won three audience choice awards.
From 1994 to 2002, Mosbacher served on the Pitzer College Board of Trustees. In 2011, she established the Mosbacher Fund for Media Studies and the Mosbacher/Gartrell Center for Media Experimentation and Activism at Pitzer College.
Mosbacher is the daughter of the late Robert Mosbacher (1927–2010), who served as U.S. Secretary of Commerce under George H.W. Bush from 1989 to 1992. Mosbacher and her father had a close relationship despite the Republican Party's largely anti-gay position. In 1992, on a day when the two were both giving commencement speeches, she told a Washington Post reporter that she began her speech: "Dad and I had breakfast this morning. We looked at each other's speeches. He would have used mine but he's not a lesbian. I would have used his, but I'm not a Republican." Dr. Mosbacher spoke out against the gay-bashing and anti-woman focus of the Republican Party's 1992 campaign.
- 1985: Closets are Health Hazards: Gay and Lesbian Physicians Come Out - Director/Producer
- 1991: Lesbians on Practice, Patients, and Power - Director/Producer
- 1994: Straight From the Heart - Director/Producer (with Frances Reid and Deborah Hoffman)
- 1995: Out for a Change: Addressing Homophobia in Women's Sports - Director/Producer
- 1996: All God's Children - Director/Producer (with Sylvia Rhue and Frances Reid)
- 2001: De Colores - Executive Producer
- 2002: Radical Harmonies: The Story of Women's Music - Director/Producer (with Boden Sandstrom and June Millington)
- 2006: No Secret Anymore: The Times of Del Martin and Phyllis Lyon - Co-Producer (with Joan E. Biren)
- 2009: Training Rules - Director/Producer (with Fawn Yacker)
- 1992: National Gay and Lesbian Task Force, Creating Change Award
- 1995: Jerry E. Berg Leadership Award, from the Human Rights Campaign Fund
- 1997: Lambda Legal Defense Liberty Award
- 2009: Barbara Gittings Memorial Award
- 2014: Mathew O. Tobriner Public Service award from the Legal Aid Society, Employment Law Center
- Woman Vision Productions official website
- IMDB page for Straight from the Heart
- The Last Closet Launches, Aims to Open Closet Doors for Gay Pro
- The Smith College Libraries, Personal & Family Papers
- The 67th Academy Awards
- Training Rules official website
- Pitzer College The Participant
- Robert A. Mosbacher, 82, Ex-Commerce Chief, Dies
- THE LESBIAN IN THE G.O.P. FAMILY, by Laura Blumenfeld, Washington Post Staff Writer, 1992
- San Francisco Chronicle, “A Word on Lesbian in GOP Family,” by Liz Smith. September 7, 1992, page E1.
- The New Yorker, “Malice Toward Some,” Comment. October 26, 1992, pages 4-6.
- Dee Mosbacher, Nanette Gartrell in The New York Times, Fashion and Style, January 16, 2005
- My Answer Is NO... If That's Okay With You official website
- Mayor Riordan to Help Honor Esteemed Federal Judgy
- Equality Forum & QFest present first Barbara Gittings Award to filmmaker Dee Mosbacher, Miami Herald, July 2009
- 2014 Mathew O. Tobriner Service Award