Gary Dempsey (born 22 November 1948) is a former Australian rules footballer who played for the Footscray Football Club and North Melbourne Football Club in the Victorian Football League (VFL). A fine ruckman known for his strong marking, Dempsey won the Brownlow Medal in 1975 and had a total of thirteen top-10 finishes in the vote count. He is also one of a handful of players to have played at least 100 games and won a best-and-fairest award at two different clubs.