By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained |
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Frontenac—Addington | September 24, 1934 | William Spankie | CA|Conservative (historical)|background}}| | Conservative | Colin Campbell | CA|Liberal|background}}| | Liberal | Death | No |
Toronto East | September 24, 1934 | Edmond Baird Ryckman | CA|Conservative (historical)|background}}| | Conservative | Thomas Langton Church | CA|Conservative (historical)|background}}| | Conservative | Death | Yes |
Kenora—Rainy River | September 24, 1934 | Peter Heenan | CA|Liberal|background}}| | Liberal | Hugh McKinnon | CA|Liberal|background}}| | Liberal | Resignation | Yes |
Elgin West | September 24, 1934 | Mitchell Hepburn | CA|Liberal|background}}| | Liberal | Wilson Mills | CA|Liberal|background}}| | Liberal | Resignation | Yes |
York North | September 24, 1934 | Thomas Herbert Lennox | CA|Conservative (historical)|background}}| | Conservative | William Pate Mulock | CA|Liberal|background}}| | Liberal | Death | No |
Oxford South | April 16, 1934 | Thomas Merritt Cayley | CA|Liberal|background}}| | Liberal | Almon Rennie | CA|Liberal|background}}| | Liberal | Death | Yes |
Yamaska | October 23, 1933 | Aimé Boucher | CA|Liberal|background}}| | Liberal | Aimé Boucher | CA|Liberal|background}}| | Liberal | Election declared void | Yes |
Mackenzie | October 23, 1933 | Milton Neil Campbell | CA|Progressive|background}}| | Progressive | John Angus MacMillan | CA|Liberal|background}}| | Liberal | Appointed vice-president of the Tariff Board | No |
Restigouche—Madawaska | October 23, 1933 | Maxime Cormier | CA|Conservative (historical)|background}}| | Conservative | Joseph Michaud | CA|Liberal|background}}| | Liberal | Death | No |
Huron South | October 3, 1932 | Thomas McMillan | CA|Liberal|background}}| | Liberal | William Henry Golding | CA|Liberal|background}}| | Liberal | Death | Yes |
Maisonneuve | June 27, 1932 | Clément Robitaille | CA|Liberal|background}}| | Liberal | Joseph Jean | CA|Liberal|background}}| | Liberal | Death | Yes |
Royal | June 27, 1932 | George Burpee Jones | CA|Conservative (historical)|background}}| | Conservative | George Burpee Jones | CA|Conservative (historical)|background}}| | Conservative | Resignation | Yes |
Athabaska | March 21, 1932 | John Francis Buckley | CA|Liberal|background}}| | Liberal | Percy Griffith Davies | CA|Conservative (historical)|background}}| | Conservative | Death | No |
Three Rivers—St. Maurice | August 10, 1931 | Arthur Bettez | CA|Liberal|background}}| | Liberal | Charles Bourgeois | CA|Conservative (historical)|background}}| | Conservative | Death | No |
Hamilton East | August 10, 1931 | George Septimus Rennie | CA|Conservative (historical)|background}}| | Conservative | Humphrey Mitchell | CA|Labour|background}}| | Labour | Death | No |
Richmond—West Cape Breton | September 2, 1930 | John Alexander Macdonald | CA|Conservative (historical)|background}}| | Conservative | Edgar Nelson Rhodes | CA|Conservative (historical)|background}}| | Conservative | Resignation to provide a seat for Rhodes | Yes |
Melfort | August 25, 1930 | Robert Weir | CA|Conservative (historical)|background}}| | Conservative | Robert Weir | CA|Conservative (historical)|background}}| | Conservative | Recontested upon appointment as Minister of Agriculture. | Yes |
Oxford North | August 25, 1930 | Donald Matheson Sutherland | CA|Conservative (historical)|background}}| | Conservative | Donald Matheson Sutherland | CA|Conservative (historical)|background}}| | Conservative | Recontested upon appointment as Minister of National Defence. | Yes |
Leeds | August 25, 1930 | Hugh Alexander Stewart | CA|Conservative (historical)|background}}| | Conservative | Hugh Alexander Stewart | CA|Conservative (historical)|background}}| | Conservative | Recontested upon appointment as Minister of Public Works. | Yes |
Kootenay East | August 25, 1930 | Michael Dalton McLean | CA|Conservative (historical)|background}}| | Conservative | Henry Herbert Stevens | CA|Conservative (historical)|background}}| | Conservative | Resignation to provide a seat for Stevens | Yes |
Laval—Two Mountains | August 25, 1930 | Arthur Sauvé | CA|Conservative (historical)|background}}| | Conservative | Arthur Sauvé | CA|Conservative (historical)|background}}| | Conservative | Recontested upon appointment as Postmaster General. | Yes |
Toronto East | August 25, 1930 | Edmond Baird Ryckman | CA|Conservative (historical)|background}}| | Conservative | Edmond Baird Ryckman | CA|Conservative (historical)|background}}| | Conservative | Recontested upon appointment as Minister of National Revenue. | Yes |
Neepawa | August 25, 1930 | Thomas Gerow Murphy | CA|Conservative (historical)|background}}| | Conservative | Thomas Gerow Murphy | CA|Conservative (historical)|background}}| | Conservative | Recontested upon appointment as Minister of the Interior. | Yes |
Fort William | August 25, 1930 | Robert James Manion | CA|Conservative (historical)|background}}| | Conservative | Robert James Manion | CA|Conservative (historical)|background}}| | Conservative | Recontested upon appointment as Minister of Railways and Canals. | Yes |
St. John—Albert | August 25, 1930 | Murray MacLaren | CA|Conservative (historical)|background}}| | Conservative | Murray MacLaren | CA|Conservative (historical)|background}}| | Conservative | Recontested upon appointment as Minister of Pensions and National Health. | Yes |
Wellington South | August 25, 1930 | Hugh Guthrie | CA|Conservative (historical)|background}}| | Conservative | Hugh Guthrie | CA|Conservative (historical)|background}}| | Conservative | Recontested upon appointment as Minister of Justice. | Yes |
Timiskaming South | August 25, 1930 | Wesley Gordon | CA|Conservative (historical)|background}}| | Conservative | Wesley Gordon | CA|Conservative (historical)|background}}| | Conservative | Recontested upon appointment as Minister of Immigration and Colonization and Minister of Mines. | Yes |
Chambly—Verchères | August 25, 1930 | Alfred Duranleau | CA|Conservative (historical)|background}}| | Conservative | Alfred Duranleau | CA|Conservative (historical)|background}}| | Conservative | Recontested upon appointment as Minister of Marine. | Yes |
Quebec West | August 25, 1930 | Maurice Dupré | CA|Conservative (historical)|background}}| | Conservative | Maurice Dupré | CA|Conservative (historical)|background}}| | Conservative | Recontested upon appointment as Solicitor General. | Yes |
St. Lawrence—St. George | August 25, 1930 | Charles Cahan | CA|Conservative (historical)|background}}| | Conservative | Charles Cahan | CA|Conservative (historical)|background}}| | Conservative | Recontested upon appointment as Secretary of State of Canada. | Yes |
Calgary West | August 25, 1930 | R. B. Bennett | CA|Conservative (historical)|background}}| | Conservative | R. B. Bennett | CA|Conservative (historical)|background}}| | Conservative | Recontested upon appointment as Prime Minister and Minister of Finance. | Yes |
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