William Michael Withycombe (born November 18, 1964 in Meridian, Mississippi) is a former professional American and Canadian football offensive lineman who played three seasons in the Canadian Football League, mainly for the Baltimore Stallions. Previously he played four seasons in the NFL for three different teams. He played college football at Fresno State University. He was a part of the Stallions' Grey Cup victory in 1995. He won the CFL's Most Outstanding Offensive Lineman Award in 1995.