By-elections to the 2nd Canadian Parliament were held to elect members of the House of Commons of Canada between the 1872 federal election and the 1874 federal election. The Conservative Party of Canada led a majority government for most of the 2nd Canadian Parliament.

The list includes Ministerial by-elections which occurred due to the requirement that Members of Parliament recontested 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 RetainedVictoriaDecember 20, 1873William Ross    Liberal William Ross    Liberal Recontested upon appointment as Minister of MilitiaYesAntigonishDecember 20, 1873Hugh McDonald    Liberal-Conservative Angus McIsaac    Liberal Appointed a Judge of the Supreme Court of Nova ScotiaNoWest TorontoDecember 18, 1873John Willoughby Crawford    ConservativeThomas Moss    Liberal Incumbent's deathNoBruce SouthDecember 14, 1873Edward Blake    LiberalEdward Blake    Liberal Recontested upon appointment as Minister without portfolioYesShelburneDecember 9, 1873Thomas Coffin    Liberal-ConservativeThomas Coffin    Liberal Recontested upon appointment as Receiver-General of CanadaNoLennoxDecember 3, 1873Richard John Cartwright    Liberal Richard John Cartwright    Liberal Recontested upon appointment as Minister of FinanceYesQueen's CountyDecember 3, 1873David Laird    Liberal David Laird    Liberal Recontested upon appointment as Minister of the InteriorYesCity of St. JohnDecember 1, 1873Samuel Leonard Tilley    Liberal-Conservative Jeremiah Smith Boies De Veber    Liberal Appointed Lieutenant-Governor of New BrunswickNoCity and County of St. JohnDecember 1, 1873Isaac Burpee    Liberal Isaac Burpee    Liberal Recontested upon appointment as Minister of CustomsYesWestmorlandNovember 28, 1873Albert James Smith    Liberal Albert James Smith    Liberal Recontested upon appointment as Minister of Marine and FisheriesYesBellechasseNovember 27, 1873Télesphore Fournier    Liberal Télesphore Fournier    Liberal Recontested upon appointment as Minister of Inland RevenueYesNapiervilleNovember 27, 1873Antoine-Aimé Dorion    Liberal Antoine-Aimé Dorion    Liberal Recontested upon appointment as Minister of JusticeYesGlengarryNovember 26, 1873Donald Alexander Macdonald    Liberal Donald Alexander Macdonald    Liberal Recontested upon appointment as Postmaster-GeneralYesLambtonNovember 25, 1873Alexander Mackenzie    Liberal Alexander Mackenzie    Liberal Recontested upon appointment as Prime Minister and Minister of Public WorksYesLavalOctober 28, 1873Joseph-Hyacinthe Bellerose    Conservative Joseph-Aldric Ouimet    Liberal-Conservative Called to the SenateYesProvencherOctober 13, 1873George-Étienne Cartier    Liberal-Conservative Louis Riel    Independent Incumbent's deathNoPrince CountySeptember 29, 1873New seat James Colledge Pope and James YeoConservative and Liberal Held as a result of Prince Edward Island joining Confederation. Elected 2 MPs.NAQueen's CountySeptember 29, 1873New seat David Laird and Peter Sinclair    Liberal Held as a result of Prince Edward Island joining Confederation. Elected 2 MPs.NAKing's CountySeptember 29, 1873New Seat Daniel Davies and Augustine Colin Macdonald    Conservative and Liberal-Conservative Held as a result of Prince Edward Island joining Confederation. Elected 2 MPs.NACarletonSeptember 18, 1873Charles Connell    Liberal Stephen Burpee Appleby    Liberal Incumbent's deathYesAntigonishJuly 7, 1873Hugh McDonald    Liberal-Conservative Hugh McDonald    Liberal-Conservative Recontested upon appointment as President of the Privy CouncilYesOntario SouthJuly 7, 1873Thomas Nicholson Gibbs    Liberal-Conservative Thomas Nicholson Gibbs    Liberal-Conservative Recontested upon appointment as Secretary of State for the Provinces and Superintendent General of Indian AffairsYesHantsJuly 5, 1873Joseph Howe    Liberal-Conservative Monson Henry Goudge    Liberal Appointed Lieutenant Governor of Nova Scotia.NoDurham WestApril 10, 1873Edward Blake    Liberal Edmund Burke Wood    Liberal Chose to sit for Bruce South.YesQuebec CountyMarch 28, 1873Pierre-Joseph-Olivier Chauveau    Conservative Adolphe-Philippe Caron    Conservative Called to the SenateYesBonaventureFebruary 15, 1873Théodore Robitaille    Conservative Théodore Robitaille    Conservative Recontested upon appointment as Receiver-GeneralYesWellandNovember 23, 1872Thomas Clark Street    Conservative William Alexander Thomson     LiberalIncumbent's deathNo

See also List of federal by-elections in Canada

Sources Parliament of Canada–Elected in By-Elections