Matti Risto Tapio "Hakki" Hagman was a Finnish professional ice hockey player. Hagman was the first Finnish-born and Finnish-trained player to play in the National Hockey League (NHL) and the first to play in a Stanley Cup Finals. The first Finnish-born player in NHL was Albert Pudas, who never played hockey in Finland, having moved to Canada at the age of one. Hagman's jersey number 20 is also one of the eight retired numbers in HIFK, where he was a prominent player.

HIFK is a professional ice hockey team based in Helsinki, Finland that plays in the SM-liiga, the sport's top-level league in Finland. The team plays at Helsinki Ice Hall.