Mattias Öhlund (born September 9, 1976) is a Swedish professional ice hockey defenceman with the Vancouver Canucks of the National Hockey League (NHL).

Drafted by the Canucks thirteenth overall in the 1994 NHL Entry Draft, Öhlund initially played three seasons in the Swedish Elitserien with Luleå HF, winning the Le Mat Trophy as league champions in 1996. He began his NHL career with Vancouver in 1997–98 and is currently the longest serving player on the Canucks' current roster. He is the Canucks' all-time leading goal-scorer among defencemen, passing Jyrki Lumme during the 2007–08 season, and all-time point-scorer among defencemen, passing Lumme and Dennis Kearns in 2008–09.

Internationally, Öhlund has represented Sweden in numerous tournaments, beginning with three World Junior Championships that included Best Defenceman honours as part of a silver medal effort in 1996. He has since competed in three World Championships, earning gold in 1998 and three Winter Olympics, earning gold in 2006.