Lawrence Joseph Gagner (born December 30, 1943) is a former professional football player who was an offensive lineman in the National Football League (NFL) for parts of five seasons during the 1960s and 1970s. Gagner was born in Cleveland, Ohio and grew up near Daytona Beach, Florida, where he was a multi-sport all-state athlete at Seabreeze High School. He choose to attend college at the University of Florida, where he played several positions on offense and defense for the Florida Gators under head coach Ray Graves. Gagner became a regular starter on the Gators' offensive line during his junior year in 1964. He was a two-time All-SEC guard and was a consensus All-American at that position during his senior year in 1965.