The 2008 Canadian federal election was held on October 14, 2008, to elect members to the House of Commons of Canada of the 40th Canadian Parliament after the previous parliament had been dissolved by Governor General Michaëlle Jean on September 7, 2008.

The 40th Canadian Parliament was in session from November 18, 2008 to March 26, 2011. It was the last Parliament of the longest-running minority government in Canadian history that began with the previous Parliament. The membership of its House of Commons was determined by the results of the 2008 federal election held on October 14, 2008. Its first session was then prorogued by the Governor General on December 4, 2008, at the request of Prime Minister Stephen Harper, who was facing a likely no-confidence motion and a coalition agreement between the Liberal party and the New Democratic Party with the support of the Bloc Québécois. Of the 308 MPs elected at the October 14, 2008 general election, 64 were new to Parliament and three sat in Parliaments previous to the 39th: John Duncan, Jack Harris and Roger Pomerleau.