List of Alberta by-elections

The list of Alberta by-elections includes every by-election held in the Canadian province of Alberta. By-elections occur whenever there is a vacancy in the Legislative Assembly, although an imminent general election may allow the vacancy to remain until the dissolution of parliament. Until 1926 incumbent members were required to recontest their seats upon being appointed to Cabinet. These Ministerial by-elections were almost always uncontested.

18th Legislative Assembly of Alberta 1975–1979
no by-elections

9th Legislative Assembly of Alberta 1940–1944
† Won by acclamation

8th Legislative Assembly of Alberta 1935–1940
† Won by acclamation

5th Legislative Assembly of Alberta 1921–1926
† Won by acclamation

4th Legislative Assembly of Alberta 1917–1921
† Won by acclamation

3rd Legislative Assembly of Alberta 1913–1917
† Won by acclamation

2nd Legislative Assembly of Alberta 1909–1913
† Won by acclamation

* Patterson was elected with Conservative support and sat as a Conservative in the Legislature

1st Legislative Assembly of Alberta 1905–1909
† Won by acclamation