The 1917 Alberta general election was held on 7 June 1917 to elect members of the Legislative Assembly of Alberta. The Liberals won a fourth term in office, defeating the Conservative Party of Edward Michener. This was the last time Liberals won an Alberta provincial election. The 1917 election was the tightest majority ever formed in Alberta history, with the combined opposition equaling 71% of the MLAs on the government benches. Premier Sifton resigned in October 1917 in order to serve in the federal Unionist government of Prime Minister Borden and was replaced by Charles Stewart.