The Socialist Labor Party was a political party in Canada that was formed in 1898 by Canadian supporters of the ideas of American socialist Daniel De Leon and the Socialist Labor Party of America. It became a national party in the 1930s and had its headquarters in Toronto. The party never won any seats. The party ran only a small number of candidates (listed below), all of whom placed last in their respective elections. The party dissolved in 2005 following the accidental death of its national secretary, Doug Irving.