Mark Einar Johnson is an American ice hockey coach for the University of Wisconsin–Madison women's ice hockey team. He is a former National Hockey League (NHL) player who appeared in 669 NHL regular season games between 1980 and 1990. He also played for the gold medal-winning 1980 U.S. Olympic team, leading the team in points with 11. As head coach of Wisconsin, he has led them to eight National Championships, the most for all NCAA Division I hockey teams. He is the son of legendary Wisconsin Bob Johnson, under whom he played while winning a national championship at the University of Wisconsin in 1977.