Alvis Forrest Gregg (October 18, 1933 – April 12, 2019) was an American football player and coach in the National Football League (NFL), the Canadian Football League and the NCAA.
A Pro Football Hall of Fame offensive lineman for 16 seasons, 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 the Packers), as well as two CFL teams (Toronto Argonauts and Shreveport Pirates).
As a head coach, he led the 1981 Bengals to the Super Bowl, where they lost to the San Francisco 49ers, 26–21.