The 1921 Alberta general election was held on July 18, 1921, to elect members to the 5th Alberta Legislative Assembly. It was one of only five times that Alberta has changed governments.

Charles Stewart, was a Canadian politician who served as the third premier of Alberta from 1917 until 1921. Born in Strabane, Ontario, in then Wentworth County, Stewart was a farmer who moved west to Alberta after his farm was destroyed by a storm. There he became active in politics and was elected to the Legislative Assembly of Alberta in the 1909 election. He served as Minister of Public Works and Minister of Municipal Affairs—the first person to hold the latter position in Alberta—in the government of Arthur Sifton. When Sifton left provincial politics in 1917 to join the federal cabinet, Stewart was named his replacement.