# By-elections to the 16th Canadian Parliament

By-elections to the 16th Canadian Parliament were held to elect members of the House of Commons of Canada between the 1926 federal election and the 1930 federal election. The Liberal Party of Canada led a minority government for the 16th Canadian Parliament.
The list includes Ministerial by-elections which occurred due to the requirement that Members of Parliament recontest their seats upon being appointed to Cabinet. These by-elections were almost always uncontested. This requirement was abolished in 1931.
| By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained |
| Brandon | February 5, 1930 | Robert Forke | Liberal-Progressive | Thomas Alexander Crerar | Liberal | Called to the Senate | No |
| Bagot | January 27, 1930 | Georges Dorèze Morin | Liberal | Cyrille Dumaine | Liberal | Death | Yes |
| Châteauguay—Huntingdon | January 27, 1930 | James Alexander Robb | Liberal | Dennis James O'Connor | Liberal | Death | Yes |
| Prescott | July 29, 1929 | Louis-Mathias Auger | Independent Liberal | Élie-Oscar Bertrand | Liberal | Resignation following criminal charge | No |
| Lanark | July 29, 1929 | Richard Franklin Preston | Conservative | William Samuel Murphy | Independent Conservative | Death | No |
| Vaudreuil-Soulanges | July 29, 1929 | Lawrence Alexander Wilson | Liberal | Lawrence Alexander Wilson | Liberal | Resigned, intending to retire, but persuaded to run again | Yes |
| Laprairie—Napierville | July 22, 1929 | Roch Lanctôt | Liberal | Vincent Dupuis | Liberal | Death | Yes |
| Frontenac—Addington | July 22, 1929 | John Wesley Edwards | Conservative | William Spankie | Conservative | Death | Yes |
| Lambton West | January 14, 1929 | William Goodison | Liberal | Ross Gray | Liberal | Death | Yes |
| Joliette | December 17, 1928 | Jean-Joseph Denis | Liberal | Charles-Édouard Ferland | Liberal | Appointed a judge of the Superior Court of Quebec. | Yes |
| Victoria | December 6, 1928 | Simon Fraser Tolmie | Conservative | D'Arcy Plunkett | Conservative | Resignation to become Premier of British Columbia. | Yes |
| York West | October 29, 1928 | Henry Lumley Drayton | Conservative | Earl Lawson | Conservative | Appointed Chairman of the Liquor Control Board of Ontario. | Yes |
| Maple Creek | November 25, 1927 | George Spence | Liberal | William George Bock | Liberal | Resignation to enter provincial politics in Saskatchewan | Yes |
| Huron North | September 12, 1927 | John Warwick King | Progressive | George Spotton | Liberal | Death | No |
| Victoria—Carleton | June 16, 1927 | James Kidd Flemming | Conservative | Albion Roudolph Foster | Liberal | Death | No |
| Antigonish—Guysborough | January 18, 1927 | John Carey Douglas | Conservative | William Duff | Liberal | Death | No |
| Kootenay East | November 9, 1926 | James Horace King | Liberal | James Horace King | Liberal | Recontested upon appointment as Minister of Soldiers' Civil Re-establishment | Yes |
| Bruce North | November 9, 1926 | James Malcolm | Liberal | James Malcolm | Liberal | Recontested upon appointment as Minister of Trade and Commerce | Yes |
| Dorchester | November 2, 1926 | Lucien Cannon | Liberal | Lucien Cannon | Liberal | Recontested upon appointment as Solicitor General | Yes |
| Richelieu | November 2, 1926 | Arthur Cardin | Liberal | Arthur Cardin | Liberal | Recontested upon appointment as Minister of Marine and Fisheries | Yes |
| Regina | November 2, 1926 | Charles Avery Dunning | Liberal | Charles Avery Dunning | Liberal | Recontested upon appointment as Minister of Railways and Canals. | Yes |
| Middlesex West | November 2, 1926 | John Campbell Elliott | Liberal | John Campbell Elliott | Liberal | Recontested upon appointment as Minister of Public Works. | Yes |
| Waterloo North | November 2, 1926 | William Daum Euler | Liberal | William Daum Euler | Liberal | Recontested upon appointment as Minister of Customs and Excise. | Yes |
| Brandon | November 2, 1926 | Robert Forke | Liberal-Progressive | Robert Forke | Liberal-Progressive | Recontested upon appointment as Minister of Immigration and Colonization | Yes |
| Kenora—Rainy River | November 2, 1926 | Peter Heenan | Liberal | Peter Heenan | Liberal | Recontested upon appointment as Minister of Labour | Yes |
| Prince Albert | November 2, 1926 | William Lyon Mackenzie King | Liberal | William Lyon Mackenzie King | Liberal | Recontested upon appointment as Prime Minister. | Yes |
| Quebec East | November 2, 1926 | Ernest Lapointe | Liberal | Ernest Lapointe | Liberal | Recontested upon appointment as Minister of Justice. | Yes |
| Melville | November 2, 1926 | William Richard Motherwell | Liberal | William Richard Motherwell | Liberal | Recontested upon appointment as Minister of Agriculture. | Yes |
| Shelburne—Yarmouth | November 2, 1926 | Paul Lacombe Hatfield | Liberal | James Ralston | Liberal | Called to the Senate to provide a seat for Ralston | Yes |
| St. James | November 2, 1926 | Fernand Rinfret | Liberal | Fernand Rinfret | Liberal | Recontested upon appointment as Secretary of State of Canada. | Yes |
| Châteauguay—Huntingdon | November 2, 1926 | James Robb | Liberal | James Robb | Liberal | Recontested upon appointment as Minister of Finance. | Yes |
| Edmonton West | November 2, 1926 | Charles Stewart | Liberal | Charles Stewart | Liberal | Recontested upon appointment as Minister of the Interior and Mines. | Yes |
| Gloucester | November 2, 1926 | Peter Veniot | Liberal | Peter Veniot | Liberal | Recontested upon appointment as Postmaster General. | Yes |