Official (Canadian football)
An official in Canadian football is a person who has responsibility in enforcing the rules and maintaining the order of the game, like their counterparts in the American game. In the Canadian Football League, seven officials operate on the field. Lower levels of play up to the university level use less than the standard seven.
Football officials are commonly, but incorrectly, referred to collectively as referees, but each position has specific duties and a specific name: referee, umpire, head linesman (or down judge), line judge, back judge, side judge, and field judge. Because the referee is responsible for the general supervision of the game, the position is sometimes referred to as head referee or crew chief. The centre judge, used only in the United States in NCAA Division I college football and in the AAF during its single season, has not been used in Canadian football yet; the CFL used an eighth official (with no official position name) only during the 2018 playoffs, but that official's only responsibility was watching for head contact with the quarterback.