David R. Reville (born April 19, 1943) is a former politician in Ontario, Canada, and an activist and educator active in Mad Pride, mad studies, and disability studies. Reville was a New Democratic member of the Legislative Assembly of Ontario from 1985 to 1990 who represented the downtown Toronto riding of Riverdale. Between 1990 and 1995 he was an advisor to the government of Bob Rae.