By-elections
| By-election | Year | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Esquimalt—Saanich | 1961 | George Pearkes | Progressive Conservative | George Chatterton | Progressive Conservative | Appointed Lieutenant Governor of British Columbia | Yes | ||
| Restigouche—Madawaska | 1961 | Joseph Charles Van Horne | Progressive Conservative | Edgar-E. Fournier | Progressive Conservative | Resignation | Yes | ||
| Leeds | 1961 | Hayden Stanton | Progressive Conservative | John Ross Matheson | Liberal | Death | No | ||
| King's | 1961 | John Augustine Macdonald | Progressive Conservative | Margaret Mary Macdonald | Progressive Conservative | Death | Yes | ||
| Royal | 1960 | Alfred J. Brooks | Progressive Conservative | Hugh John Flemming | Progressive Conservative | Called to the Senate | Yes | ||
| Niagara Falls | 1960 | William L. Houck | Liberal | Judy LaMarsh | Liberal | Death | Yes | ||
| Peterborough | 1960 | Gordon K. Fraser | Progressive Conservative | Walter Pitman | New Party | Death | No | ||
| Labelle | 1960 | Henri Courtemanche | Progressive Conservative | Gaston Clermont | Liberal | Called to the Senate | No | ||
| Hastings—Frontenac | 1959 | Sidney Earle Smith | Progressive Conservative | Rod Webb | Progressive Conservative | Death | Yes | ||
| Russell | 1959 | Joseph-Omer Gour | Liberal | Paul Tardif | Liberal | Death | Yes | ||
| Springfield | 1958 | Val Yacula | Progressive Conservative | Joe Slogan | Progressive Conservative | Death | Yes | ||
| Trinity | 1958 | Edward R. Lockyer | Progressive Conservative | Paul Hellyer | Liberal | Death | No | ||
| Grenville—Dundas | 1958 | A. Clair Casselman | Progressive Conservative | Jean Casselman | Progressive Conservative | Death | Yes | ||
| Montmagny—L'Islet | 1958 | Jean Lesage | Liberal | Louis Fortin | Progressive Conservative | Resigned to enter provincial politics in Quebec | No | ||
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