20. ACT UP - 52
Born: 1987 in New York, New York

Legacy: The AIDS Coalition to Unleash Power, ACT UP is a direct action advocacy group that did remarkable AIDS activism work (watch "How To Survive a Plague" and "United in Anger"!)

19. Divine - 55
Born: 1945 in Baltimore, Maryland
Died: 1988 in Los Angeles, California

Legacy: The drag persona of Harris Glenn Milstead, he was a singer, actor, and the muse to director John Waters.

18. Rosie O'Donnell - 59
Born: 1962 in Commack, New York

Legacy: Actress, talk show host and activist who since coming out in 2002 has been a vocal advocate for gay adoption, among many other things.

17. Lady Gaga - 63
Born: 1986 in New York, New York

Legacy: Pop singer and LGBT activist who has built her career around an LGBT fan base.

16. Vito Russo - 64
Born: 1946
Died: 1990 in New York, New York

Legacy: Gay rights activist, film historian and author best remembered for his 1981 book "The Celluloid Closet" and the TV show "In The Life."

Check out all the results for every poll here.