| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained |
|---|
| St. Hyacinthe | July 4, 1900 | Michel-Esdras Bernier | | Liberal | Michel-Esdras Bernier | | Liberal | Recontested upon appointment as Minister of Inland Revenue | Yes |
| Lotbinière | January 25, 1900 | Côme Isaïe Rinfret | | Liberal | Edmond Fortier | | Liberal | Appointment as a revenue inspector | Yes |
| Town of Sherbrooke | January 25, 1900 | William Bullock Ives | | Conservative | John McIntosh | | Conservative | Death | Yes |
| Winnipeg | January 25, 1900 | Richard Willis Jameson | | Liberal | Arthur Puttee | | Labour | Death | Yes |
| Berthier | January 18, 1900 | Cléophas Beausoleil | | Liberal | Joseph Éloi Archambault | | Liberal | Appointed postmaster of Montreal | Yes |
| Labelle | January 18, 1900 | Henri Bourassa | | Liberal | Henri Bourassa | | Independent | Resignation to recontest in protest at Canada's participation in the Boer War | No |
| Chambly—Verchères | January 18, 1900 | Christophe-Alphonse Geoffrion | | Liberal | Victor Geoffrion | | Liberal | Death | Yes |
| Ontario West | January 18, 1900 | James David Edgar | | Liberal | Isaac James Gould | | Liberal | Death | Yes |
| Brockville | April 20, 1899 | John Fisher Wood | | Liberal-Conservative | William Henry Comstock | | Liberal | Death | No |
| Lévis | March 22, 1899 | Pierre Malcom Guay | | Liberal | Louis-Jules Demers | | Liberal | Death | Yes |
| Huron West | February 21, 1899 | Malcolm Colin Cameron | | Liberal | Robert Holmes | | Liberal | Appointed Lieutenant-Governor of the North-West Territories | Yes |
| East Prince | December 14, 1898 | John Yeo | | Liberal | John Howatt Bell | | Liberal | Called to the Senate | Yes |
| Lambton West | December 14, 1898 | James Frederick Lister | | Liberal | Thomas George Johnston | | Liberal | Appointed to the Court of Appeal |
| Bagot | December 14, 1898 | Flavien Dupont | | Conservative | Joseph Edmond Marcile | | Liberal | Death | No |
| Montmagny | December 14, 1898 | Philippe-Auguste Choquette | | Liberal | Pierre-Raymond-Léonard Martineau | | Liberal | Appointed a judge of the Superior Court of Quebec | Yes |
| Simcoe North | December 14, 1898 | Dalton McCarthy | | McCarthyite | Leighton McCarthy | | Independent (McCarthyite) | Death | Yes |
| West Prince | April 13, 1898 | Stanislaus Francis Perry | | Liberal | Bernard Donald McLellan | | Liberal | Death | Yes |
| Quebec-Centre | January 24, 1898 | François Langelier | | Liberal | Arthur Cyrille Albert Malouin | | Liberal | Appointed a judge of the Superior Court of Quebec | Yes |
| Nicolet | December 21, 1897 | Fabien Boisvert | | Conservative | Joseph Hector Leduc | | Liberal | Death | No |
| Toronto Centre | November 30, 1897 | William Lount | | Liberal | George Hope Bertram | | Liberal | Resignation | Yes |
| Drummond—Arthabaska | November 13, 1897 | Joseph Lavergne | | Liberal | Louis Lavergne | | Liberal | Appointed a judge of the Superior Court of Quebec | Yes |
| Témiscouata | November 6, 1897 | Charles-Eugène Pouliot | | Liberal | Charles Arthur Gauvreau | | Liberal | Death | Yes |
| Rimouski | November 6, 1897 | Jean-Baptiste Romuald Fiset | | Liberal | Jean Auguste Ross | | Liberal | Called to the Senate | Yes |
| West Prince | April 27, 1897 | Edward Hackett | | Liberal-Conservative | Stanislaus Francis Perry | | Liberal | Election declared void | No |
| Macdonald | April 27, 1897 | Nathaniel Boyd | | Conservative | John Gunion Rutherford | | Liberal | Election declared void | No |
| Winnipeg | April 27, 1897 | Hugh John Macdonald | | Liberal-Conservative | Richard Willis Jameson | | Liberal | Election declared void | No |
| Colchester | April 20, 1897 | Wilbert David Dimock | | Conservative | Firman McClure | | Liberal | Election declared void | No |
| Champlain | April 7, 1897 | François-Arthur Marcotte | | Conservative | François-Arthur Marcotte | | Conservative | Election declared void | Yes |
| Wright | March 23, 1897 | Charles Ramsay Devlin | | Liberal | Louis Napoléon Champagne | | Liberal | Appointed Canadian trade commissioner to Ireland | Yes |
| Bonaventure | March 17, 1897 | William LeBoutillier Fauvel | | Liberal | Jean-François Guité | | Liberal | Death | Yes |
| Simcoe East | February 4, 1897 | William Humphrey Bennett | | Conservative | William Humphrey Bennett | | Conservative | Election declared void | Yes |
| Ontario North | February 4, 1897 | John Alexander McGillivray | | Conservative | Duncan Graham | | Independent Liberal | Election declared void | No |
| Brant South | February 4, 1897 | Robert Henry | | Conservative | Charles Bernhard Heyd | | Liberal | Election declared void | No |
| Saskatchewan (Provisional District) | December 19, 1896 | Wilfrid Laurier | | Liberal | Thomas Osborne Davis | | Liberal | Laurier was elected to two seats, resigned to run in ministerial by-election in Quebec East | Yes |
| Cornwall and Stormont | December 19, 1896 | Darby Bergin | | Liberal-Conservative | John Goodall Snetsinger | | Liberal | Death | No |
| Brandon | November 27, 1896 | Dalton McCarthy | | McCarthyite | Clifford Sifton | | Liberal | Chose to sit for Simcoe North | No |
| Sunbury—Queen's | August 25, 1896 | George G. King | | Liberal | Andrew George Blair | | Liberal | Called to Senate | Yes |
| Grey North | August 25, 1896 | John Clark | | Liberal | William Paterson | | Liberal | Death | Yes |
| Shelburne and Queen's | August 5, 1896 | Francis Gordon Forbes | | Liberal | William Stevens Fielding | | Liberal | Appointed Sub-Collector of Customs | Yes |
| St. Johns—Iberville | August 3, 1896 | François Béchard | | Liberal | Joseph Israël Tarte | | Liberal | Called to the Senate | Yes |
| Quebec County | July 30, 1896 | Charles Fitzpatrick | | Liberal | Charles Fitzpatrick | | Liberal | Recontested upon appointment as Solicitor General | Yes |
| Kings | July 30, 1896 | Frederick William Borden | | Liberal | Frederick William Borden | | Liberal | Recontested upon appointment as Minister of Militia and Defence | Yes |
| Oxford South | July 30, 1896 | Richard John Cartwright | | Liberal | Richard John Cartwright | | Liberal | Recontested upon appointment as Minister of Trade and Commerce | Yes |
| West Queen's | July 30, 1896 | Louis Henry Davies | | Liberal | Louis Henry Davies | | Liberal | Recontested upon appointment as Minister of Marine and Fisheries | Yes |
| Brome | July 30, 1896 | Sydney Arthur Fisher | | Liberal | Sydney Arthur Fisher | | Liberal | Recontested upon appointment as Minister of Agriculture | Yes |
| Portneuf | July 30, 1896 | Henri-Gustave Joly de Lotbinière | | Liberal | Henri-Gustave Joly de Lotbinière | | Liberal | Recontested upon appointment as Controller of Inland Revenue | Yes |
| York North | July 30, 1896 | William Mulock | | Liberal | William Mulock | | Liberal | Recontested upon appointment as Postmaster-General | Yes |
| Quebec East | July 30, 1896 | Wilfrid Laurier | | Liberal | Wilfrid Laurier | | Liberal | Recontested upon appointment as Prime Minister | Yes |