Mats Johan Sundin (Swedish pronunciation: ; born February 13, 1971) is a retired Swedish professional ice hockey player. Originally drafted first overall in 1989, Sundin played his first four seasons in the NHL with the Quebec Nordiques. He was traded to the Toronto Maple Leafs in 1994, where he played the majority of his career, serving 11 seasons as team captain. At the end of the 2007–08 NHL season, Sundin had been the longest serving non-North American born captain in NHL history. Sundin last played for the Vancouver Canucks in the 2008–09 season before announcing his retirement on September 30, 2009.
Excluding his rookie season, the shortened lockout season and his half season with the Vancouver Canucks, Sundin scored at least 70 points in every season of his career, played at least 70 games in every season (except for the lockout-shortened 1994–95 season and his final half-season), and led the Leafs in points in every year he has been with the team except 2002–03, when Alexander Mogilny beat him by seven points. On October 14, 2006, Sundin became the first Swedish player to score 500 goals. He is the Leafs' franchise all-time leader in goals (420) and points (984). He is currently tied with Jaromír Jágr, Sergei Fedorov, and Patrik Eliáš for the NHL record for regular-season overtime goals (15).
Internationally, Sundin won three gold medals with Sweden at the World Championships and a gold medal at the 2006 Winter Olympics in Turin.