Mark Keller Dixon is an American former professional football player who was an offensive guard in the National Football League (NFL) and Canadian Football League (CFL)) during the late 1990s and early 2000s. He played college football for the Virginia Cavaliers, earning consensus All-American honors in 1993. He began his professional career playing in NFL Europe, then earned starting positions with the Baltimore Stallions and Montreal Alouettes of the CFL, and the Miami Dolphins of the NFL.