Gary Lee Plummer (born January 26, 1960) is a former American football linebacker who played in the National Football League (NFL) and the United States Football League (USFL). He was signed by the San Diego Chargers as a free agent in 1986 after playing three years in the USFL. He played college football at University of California, Berkeley. Plummer won a Super Bowl ring with the San Francisco 49ers in Super Bowl XXIX.