Reginald McKenzie (born July 27, 1950) is a former American football player. He played at the offensive guard position for the University of Michigan from 1969 to 1971 and was a consensus first-team All-American in 1971. He also played 13 years of professional football for the Buffalo Bills (1972-1982) and Seattle Seahawks (1983-1984). He was selected as a first-team All-NFL player in 1973 and 1974. In 2002, he was inducted into the College Football Hall of Fame and in 1994 to the Michigan Sports Hall of Fame. He and Joe DeLamielleure were O. J. Simpson's pulling guards on his frequent sweep runs that made him the first 2000-yard rusher. He was often referred to by Simpson as his "main man" and was the leader of the team's "Electric Company" which "turned on the Juice".