The 18th Canadian Parliament was in session from 6 February 1936, until 25 January 1940. The membership was set by the 1935 federal election on 14 October 1935, and it changed only somewhat due to resignations and by-elections until it was dissolved prior to the 1940 election.

The 1935 Canadian federal election was held on October 14, 1935, to elect members of the House of Commons of Canada of the 18th Parliament of Canada. The Liberal Party of William Lyon Mackenzie King won a majority government, defeating Prime Minister R. B. Bennett's Conservatives.