Leo Peter Lamoureux (born October 1, 1916 in Espanola, Ontario, Canada - January 11, 1961) was a Canadian ice hockey defenceman. Lamoreaux played his entire National Hockey League career with the Montreal Canadiens.
He played junior and senior hockey in Northern Ontario with the Porcupine Combines and the Kirkland Lake Blue Devils and junior for the Oshawa Generals. He also spent the 1938-39 season with the Earls Court Rangers in Great Britain.
Lamoureux played for several minor pro teams until he retired for the first time in 1953. He made a two season comebakc in 1955 and after played a few games for the Cleveland Barons in 1959-60.
In the NHL he played in 235 games, scoring 19 goals and 79 assists.
The Leo P. Lamoureux Memorial Trophy is named after him.