Markus Rainer Mattsson (born July 30, 1957) is a Finnish former professional ice hockey goaltender. He was one of the first goaltenders in the National Hockey League from Finland. He is also the goalie who ended Wayne Gretzky's 51-game point streak in 1983–84.
Markus has a son, Niklas, who played ice hockey for Ilves and Suomi-sarja-team HC Montreal Tampere.