Lars Zetterstrom was born November 6, 1953 in Stockholm, Sweden. Signing as a free agent in the summer of 1978 with the Vancouver Canucks, he spent seven years playing in Sweden before moving to North America.
Prior to beginning his professional career, Zetterstrom was a gold medallist with Sweden at the 1971 European Junior Championships. A member of Farjestads BK Karlstad for six seasons, Zetterstrom competed in his first of two World European Championships, capturing a silver medal in 1977 and a bronze medal in 1978.
Following Sweden's 1978 bronze medal performance, Zetterstrom signed as a free agent with the Vancouver Canucks and headed to the NHL. He spent the better part 1978-79 season in the CHL with the Dallas Black Hawks while seeing action in 14 games with the Canucks and accounting for one assist.
Although the Quebec Nordiques claimed him in the 1979 Expansion Draft, the 1979-80 season would be Lars Zetterstrom's last season of professional hockey in North America. A member of the Cincinnati Stingers of the CHL in 1979-80, he returned home to Sweden and to Farjestads BK Karlstad (1980-83) and Hammaro HC (1983-87).