Marcus Ragnarsson (born 13 August 1971) is a Swedish former professional ice hockey defenseman who played nine seasons in the National Hockey League (NHL) for the San Jose Sharks and Philadelphia Flyers, and nine seasons in the Swedish Elitserien for Djurgårdens IF.

He enjoyed tremendous success paired alongside Mike Rathje in San Jose.

[1] During a disastrous 2002–03 season for San Jose, Ragnarsson was traded to the Philadelphia Flyers for Dan McGillis.

[3] On 8 November 2010, Ragnarsson officially announced his retirement from hockey due to repeated injuries.

[5] His nephew Gustav Lindström was chosen in the second round of the 2017 NHL entry draft by the Detroit Red Wings.