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.

This biographical article relating to a Finnish ice hockey goaltender is a stub.