Alvis Forrest Gregg (October 18, 1933 – April 12, 2019) was an American professional football player and coach. A Pro Football Hall of Fame offensive lineman for 16 seasons in the National Football League (NFL), he was a part of six NFL championships, five of them with the Green Bay Packers before closing out his tenure with the Dallas Cowboys with a win in Super Bowl VI. Gregg was later the head coach of three NFL teams (Cleveland Browns, Cincinnati Bengals, and Green Bay Packers), as well as two Canadian Football League (CFL) teams (Toronto Argonauts and Shreveport Pirates). He was also a college football coach for the SMU Mustangs.