By-elections to the 10th Canadian Parliament were held to elect members of the House of Commons of Canada between the 1904 federal election and the 1908 federal election. The Liberal Party of Canada led a majority government for the 10th 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.

Alberta and Saskatchewan entered Confederation in 1905. Unlike in the case of other provinces that joined after 1867, the new provinces were already represented by ridings originally drawn for the Northwest Territories, and the members elected in 1904 continued to sit as representatives of the old NWT ridings (some of which straddled the new border), except where they resigned as indicated below. By-election Date Incumbent Party Winner Party Cause RetainedStansteadJanuary 22, 1908Henry Lovell    LiberalCharles Henry Lovell    LiberalDeathYesHuron SouthJanuary 22, 1908Benjamin B. Gunn    ConservativeMurdo Young McLean    LiberalDeathNoNicoletDecember 30, 1907Charles Ramsay Devlin    LiberalGustave-Adolphe-Narcisse Turcotte    LiberalResignation upon appointment to the provincial cabinet of QuebecYesCity of OttawaDecember 23, 1907Napoléon Antoine Belcourt    LiberalWilliam H. Hutchison    LiberalCalled to the SenateYesLabelleDecember 23, 1907Henri Bourassa    LiberalCharles Beautron Major    LiberalResignation to enter provincial politicsYesYork CentreDecember 23, 1907Archibald Campbell    LiberalPeter Douglas McLean    LiberalCalled to the SenateYesColchesterNovember 28, 1907Frederick Andrew Laurence    LiberalJohn Stanfield    ConservativeAppointed a judgeNoLondonOctober 29, 1907C. S. Hyman    LiberalThomas Beattie    ConservativeResignation NoNorthumberland EastOctober 29, 1907Edward Cochrane    ConservativeCharles Lewis Owen    ConservativeDeathYesWellington NorthOctober 29, 1907Thomas Martin    LiberalAlexander Munro Martin    LiberalDeathYesBrockvilleSeptember 18, 1907Daniel Derbyshire    LiberalGeorge Perry Graham    LiberalCalled to the SenateYesCity and County of St. JohnSeptember 18, 1907Alfred Augustus Stockton    ConservativeWilliam Pugsley    LiberalDeathNoRichelieuMarch 7, 1907Arthur-Aimé Bruneau    LiberalAdélard Lanctôt    LiberalAppointed a judge of the Superior Court of QuebecYesL'AssomptionMarch 7, 1907Romuald-Charlemagne Laurier    LiberalRuben Charles Laurier    LiberalDeathYesVictoriaMarch 5, 1907John Costigan    LiberalPius Michaud    LiberalCalled to the SenateYesThree Rivers and St. MauriceFebruary 28, 1907Jacques Bureau    LiberalJacques Bureau    LiberalRecontested upon appointment as Solicitor GeneralYesNicoletDecember 29, 1906Rodolphe Lemieux    LiberalCharles Ramsay Devlin    LiberalChose to sit for GaspéYesSt. AnnNovember 21, 1906Daniel Gallery    LiberalJoseph Charles Walsh    LiberalElection declared voidYesSt. MaryNovember 21, 1906Camille Piché    LiberalMédéric Martin    LiberalAppointed Police Magistrate in Montreal.YesShelburne and Queen'sOctober 31, 1906William Stevens Fielding    LiberalWilliam Stevens Fielding    LiberalElection declared voidYesBruce NorthOctober 30, 1906Leonard Thomas Bland    Liberal-ConservativeJohn Tolmie    LiberalDeathNoQuebec CountyOctober 23, 1906Charles Fitzpatrick    LiberalLorenzo Robitaille    Independent LiberalAppointed Chief Justice of CanadaNoSt. Johns—IbervilleOctober 16, 1906Louis Philippe Demers    LiberalMarie Joseph Demers    LiberalAppointed Puisne Judge of the Superior Court of QuebecYesElgin EastOctober 14, 1906Andrew B. Ingram    Liberal-ConservativeDavid Marshall    ConservativeAppointed Vice Chairman of the Ontario Railway and Municipal CommissionYesRenfrew NorthOctober 9, 1906Peter White    ConservativeGerald Verner White    ConservativeDeathYesStrathconaApril 5, 1906Peter Talbot    LiberalWilbert McIntyre    LiberalCalled to the SenateYesCape Breton North and VictoriaMarch 14, 1906Daniel Duncan McKenzie    LiberalAlexander Charles Ross    LiberalAppointed a judgeYesVictoria CityMarch 6, 1906George Riley    LiberalWilliam Templeman    LiberalResignation to provide a seat for Templeman YesMaisonneuveFebruary 23, 1906Raymond Préfontaine    LiberalAlphonse Verville    LabourDeathNoAssiniboia WestFebruary 6, 1906Thomas Walter Scott    LiberalWilliam Erskine Knowles    LiberalResignation to enter provincial politics in SaskatchewanYesSaskatchewanFebruary 6, 1906John Henderson Lamont    LiberalGeorge Ewan McCraney    LiberalResignation to enter provincial politics in SaskatchewanYesTown of SherbrookeFebruary 6, 1906Arthur Norreys Worthington    ConservativeArthur Norreys Worthington    ConservativeElection declared voidYesComptonJanuary 4, 1906Aylmer Byron Hunt    LiberalAylmer Byron Hunt    LiberalElection declared voidYesYork NorthNovember 22, 1905William Mulock    LiberalAllen Bristol Aylesworth    LiberalAppointed a judgeYesAntigonishNovember 22, 1905Colin McIsaac    LiberalWilliam Chisholm    LiberalAppointed a Railway CommissionerYesLambton WestNovember 22, 1905Thomas George Johnston    LiberalFrederick Forsyth Pardee    LiberalDeathYesWentworthNovember 22, 1905E. D. Smith    ConservativeE. D. Smith    ConservativeElection declared voidYesLondonJune 13, 1905C. S. Hyman    LiberalC. S. Hyman    LiberalRecontested upon appointment as Minister of Public WorksYesOxford NorthJune 13, 1905James Sutherland    LiberalGeorge Smith    LiberalDeathYesLévisJune 6, 1905Louis Julien Demers    LiberalLouis Auguste Carrier    LiberalDeathYesEdmontonApril 25, 1905Frank Oliver    LiberalFrank Oliver    LiberalRecontested upon appointment as Minister of the Interior.YesToronto CentreApril 11, 1905Edward Frederick Clarke    ConservativeEdmund James Bristol    ConservativeDeathYesWrightFebruary 13, 1905Wilfrid Laurier    LiberalEmmanuel Berchmans Devlin    LiberalChose to sit for Quebec EastYesCarletonFebruary 4, 1905Edward Kidd    ConservativeRobert L. Borden    ConservativeResignation to provide a seat for BordenYesQuebec-CentreJanuary 19, 1905Arthur Cyrille Albert Malouin    LiberalArthur Lachance    LiberalAppointed a judge of the Superior Court of QuebecYes

See also List of federal by-elections in Canada

Sources Parliament of Canada–Elected in By-Elections