Drafted 112th overall by the New York Islanders in the 1974 National Hockey League Entry Draft, Langevin instead chose to sign with the Edmonton Oilers of the rival World Hockey Association (who also had selected him in the WHA draft the same year) since his prospects of getting regular playing time were better in the WHA.
Langevin played for the University of Minnesota Duluth ice hockey team in 1972-1976. Langevin became a solid performer for the Oilers, making the All-WHA Second All Star team in 1978-1979. When the Oilers joined the National Hockey League the following season, the Islanders reclaimed him as a former New York draft pick.
Langevin started his National Hockey League career with the New York Islanders, winning four consecutive son
He would also play with the Minnesota North Stars and Los Angeles Kings. His National Hockey League career would last from 1979 to 1987.
Langevin was a strictly defensive defensemen, whose forte was full-body checking. Langevin was instrumental in the Islanders come-back victory in the 1985 playoffs against the Washington Capitals.
Benched for the first two losses, he entered game three with a decisive physical presence, most notably checking sniper Mike Gartner with a powerful hip check.
Post Playing Langevin served as head coach of the expansion WCHL Idaho Steelheads during the 1997-1998 season. After a single season in Idaho he returned to Minnesota and became a real estate appraiser and high school hockey coach. He also served as a South Suburban (MnJHL) head coach until the team folded following the 2001-2002 season.
He has also done part-time work for the National Hockey League Central Scouting Bureau after his retirement.
Langevin, who wore #26 for the Islanders, was inducted into the United States. Hockey Hall of Fame in 1993. WHA Second All-Star Team (1979).
He is a member of the United States Hockey Hall of Fame. He was also a member of the United States national team at the 1976 Ice Hockey World Championship tournament in Katowice. Langevin would also play in the 1983 National Hockey League All-Star Game and he was also a member of the United States team at the 1981 Canada Cup.
