Lars 'Lasse' Björn (born December 16, 1931 in Stockholm, Sween) is a retired ice hockey defenceman who played 217 games for the national team Tre Kronor. He participated at nine IIHF World Championship tournaments, winning gold in 1953 and 1957 and three bronze medals. He participated in three Winter Olympics, winning one bronze medal in 1952. He was inducted into the International Ice Hockey Federation Hall of Fame in 1998.