By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained |
Outremont—St-Jean | October 6, 1952 | Édouard-G. Rinfret | | Liberal | Romuald Bourque | | Liberal | Appointed a Judge of the Court of Queen's Bench of Quebec | Yes |
Richelieu—Verchères | October 6, 1952 | Gérard Cournoyer | | Liberal | Lucien Cardin | | Liberal | Resignation | Yes |
Ontario | May 26, 1952 | Walter Cunningham Thomson | | Liberal | Michael Starr | | Progressive Conservative | Resignation | No |
Gloucester | May 26, 1952 | Clovis-Thomas Richard | | Liberal | Albany M. Robichaud | | Progressive Conservative | Resignation | No |
Victoria—Carleton | May 26, 1952 | Heber Harold Hatfield | | Progressive Conservative | Gage W. Montgomery | | Progressive Conservative | Death | Yes |
Brome—Missisquoi | May 26, 1952 | Henri A. Gosselin | | Liberal | Joseph-Léon Deslières | | Liberal | Death | Yes |
Roberval | May 26, 1952 | Joseph-Alfred Dion | | Liberal | Paul-Henri Spence | | Progressive Conservative | Appointed a Superior Court Judge of Quebec | No |
Waterloo North | May 26, 1952 | Louis Orville Breithaupt | | Liberal | Norman C. Schneider | | Liberal | Appointed Lieutenant Governor of Ontario | Yes |
Calgary West | December 10, 1951 | Arthur LeRoy Smith | | Progressive Conservative | Carl Olof Nickle | | Progressive Conservative | Resignation | Yes |
Brandon | June 25, 1951 | James Ewen Matthews | | Liberal | Walter Dinsdale | | Progressive Conservative | Death | No |
Queen's | June 25, 1951 | J. Lester Douglas | | Liberal | J. Angus MacLean | | Progressive Conservative | Death | No |
Waterloo South | June 25, 1951 | Karl Homuth | | Progressive Conservative | Howie Meeker | | Progressive Conservative | Death | Yes |
Winnipeg South Centre | June 25, 1951 | Ralph Maybank | | Liberal | Gordon Churchill | | Progressive Conservative | Resignation | No |
Rimouski | October 16, 1950 | Gleason Belzile | | Liberal | Joseph-Hervé Rousseau | | Independent Liberal | Death | No |
St. Mary | October 16, 1950 | Gaspard Fauteux | | Liberal | Hector Dupuis | | Liberal | Resignation | Yes |
Welland | October 16, 1950 | Humphrey Mitchell | | Liberal | William H. McMillan | | Liberal | Death | Yes |
Joliette—L'Assomption—Montcalm | October 3, 1950 | Georges-Émile Lapalme | | Liberal | Maurice Breton | | Liberal | Resignation | Yes |
Annapolis—Kings | June 19, 1950 | Angus Alexander Elderkin | | Liberal | George Clyde Nowlan | | Progressive Conservative | Election declared void | No |
Cartier | June 19, 1950 | Maurice Hartt | | Liberal | Leon Crestohl | | Liberal | Death | Yes |
Halifax | June 19, 1950 | Gordon B. Isnor | | Liberal | Sam Balcom | | Liberal | Called to the Senate | Yes |
Broadview | May 15, 1950 | Thomas Langton Church | | Progressive Conservative | George Hees | | Progressive Conservative | Death | Yes |
Hamilton West | May 15, 1950 | Colin W. G. Gibson | | Liberal | Ellen Fairclough | | Progressive Conservative | Appointed a Judge of the Supreme Court of Ontario | No |
Gatineau | October 24, 1949 | Léon-Joseph Raymond | | Liberal | Joseph-Célestin Nadon | | Liberal | Appointed Clerk of the House of Commons | Yes |
Kamouraska | October 24, 1949 | Eugène Marquis | | Liberal | Arthur Massé[a] | | Independent Liberal | Appointed a Superior Court Judge of Quebec | No |
Laurier | October 24, 1949 | Ernest Bertrand | | Liberal | J.-Eugène Lefrancois | | Liberal | Appointed a Judge of the Court of King's Bench of Quebec | Yes |
Mercier | October 24, 1949 | Joseph Jean | | Liberal | Marcel Monette | | Liberal | Appointed a Judge of the Supreme Court of the District of Montreal | Yes |
Greenwood | October 24, 1949 | J. Ernest McMillin | | Progressive Conservative | James Macdonnell | | Progressive Conservative | Death | Yes |
New Westminster | October 24, 1949 | Tom Reid | | Liberal | William Malcolm Mott | | Liberal | Called to the Senate | Yes |
Restigouche—Madawaska | October 24, 1949 | Benoît Michaud | | Liberal | Paul-Léon Dubé | | Independent Liberal | Death | No |
Jacques Cartier | October 4, 1949 | Elphège Marier | | Liberal | Edgar Leduc | | Independent | Appointed a Superior Court Judge of Quebec | No |