Léo Landreville (February 23, 1910 – 1996) was a Canadian politician and lawyer, who served as mayor of Sudbury, Ontario in 1955 and 1956 before being appointed to the Supreme Court of Ontario as a judge. He later became the first Ontario Supreme Court justice ever to be removed from the bench, after being implicated in the Northern Ontario Natural Gas scandal. Following his appointment to the Supreme Court, Landreville sold the shares for a profit of $117,000. Landreville subsequently returned to practising law.