Barry Douglas Adam (born 1952 in Yorkton, Saskatchewan) is Distinguished University Professor Emeritus of Sociology at the University of Windsor and from 2008 to 2019, Senior Scientist at the Ontario HIV Treatment Network in Toronto. Educated at Simon Fraser University (BAHon 1972) and the University of Toronto (PhD 1977), he is the author of The Survival of Domination, The Rise of a Gay and Lesbian Movement (1978, revised 1995), and with Alan Sears, Experiencing HIV. He later co-edited The Global Emergence of Gay and Lesbian Politics (1999). He has an extensive research record on the dynamics of domination and empowerment, LGBT studies, HIV prevention, and issues of living with HIV and AIDS, and was a co-founder of the AIDS Committee of Windsor, Ontario.