Karen Koch [pronounced "Cook"] (born 1951) is an American former ice hockey goaltender. She played for the Marquette Iron Rangers in the United States Hockey League during the 1969-70 season. She signed a contract for $40 per game which made her the first professional female hockey player in North America. As of 2000, as far as her coach, Leonard "Oakie" Brumm, knew, she was the first in the world.