| Riding | Member | Party | First elected / previously elected | Comments |
| Addington | Hammel Madden Deroche | Liberal | 1871 | | - |
| Algoma | Frederick William Cumberland | Conservative | 1867 | | - |
| Bothwell | Archibald McKellar | Liberal | 1867 | Commissioner of Agriculture and Public Works in Blake ministry after December 20, 1871 and the Mowat ministry until March 24, 1874 | - |
| Brant | Hugh Finlayson | Liberal | 1867 | | - |
| Brant South | Edmund Burke Wood | Conservative | 1867 | Treasurer in Sandfield Macdonald ministry until December 20, 1871; resigned provincial seat April 1, 1872 to keep a seat in the federal parliament | - |
| Brant South | Arthur Sturgis Hardy | Liberal | 1873 | elected May 2, 1873 | - |
Brockville and Elizabethtown | William Fitzsimmons | Conservative | 1867 | | - |
| Bruce North | Donald Sinclair | Liberal | 1867 | | - |
| Bruce South | Edward Blake | Liberal | 1867 | Leader of the Opposition until December 20, 1871 Premier and Attorney General in Blake ministry from December 20, 1871 until October 25, 1872; resigned provincial seat September 12, 1872 to keep a seat in the federal parliament; initially elected to two seats Blake represents Bruce South as Premier | - |
| Bruce South | Rupert Mearse Wells | Liberal | 1872 | elected September 21, 1872; Speaker after March 29, 1873 | - |
| Cardwell | George McManus | Liberal-Conservative | 1871 | | - |
| Carleton | George William Monk | Conservative | 1871 | | - |
| Cornwall | John Sandfield MacDonald | Conservative | 1867 | Premier and Attorney General until December 20, 1871. John Sandfield Macdonald died in June 1, 1872 | - |
| Cornwall | John Goodall Snetsinger | Liberal | 1872 | elected July 16, 1872 | - |
| Dundas | Simon S. Cook | Liberal | 1867 | | - |
| Durham East | Arthur Trefusis Heneage Williams | Conservative | 1867 | | - |
| Durham West | Edward Blake | Liberal | 1867 | Premier and Attorney General in Blake ministry from December 20, 1871 until October 25, 1872; resigned provincial seat September 12, 1872 to keep a seat in the federal parliament; initially elected to two seats Blake represents Bruce South as Premier | - |
| Durham West | John McLeod | Liberal | 1867, 1872 | | - |
| Elgin East | John Henry Wilson | Liberal | 1871 | | - |
| Elgin West | Thomas Hodgins | Liberal | 1871 | | - |
| Essex | Albert Prince | Liberal | 1871 | | - |
| Frontenac | Delino Dexter Calvin | Conservative | 1868 | | - |
| Glengarry | James Craig | Conservative | 1867 | | - |
| Grenville South | Mcneil Clarke | Conservative | 1867 | died February 29, 1872 | - |
| Grenville South | Christopher Finlay Fraser | Liberal | 1872 | elected March 30, 1872; Commissioner of Public Works in Mowat ministry after March 24, 1874 | - |
| Grey North | Thomas Scott | Conservative | 1867 | | - |
| Grey South | Abram William Lauder | Conservative | 1867 | | - |
| Haldimand | Jacob Baxter | Liberal | 1867 | | - |
| Halton | William Barber | Liberal | 1867 | | - |
| Hamilton | James Miller Williams | Liberal | 1867 | | - |
| Hastings East | Henry Corby | Conservative | 1867 | | - |
| Hastings North | George Henry Boulter | Conservative | 1867 | | - |
| Hastings West | Ketchum Graham | Conservative | 1867 | | - |
| Huron North | Thomas Gibson | Liberal | 1871 | | - |
| Huron South | Robert Gibbons | Liberal | 1867, 1871 | resigned January 8, 1874 to accept an appointment as sheriff | - |
| Huron South | Archibald Bishop | Liberal | 1873 | elected October 16, 1873 | - |
| Kent | James Dawson | Liberal | 1871 | | - |
| Kingston | William Robinson | Conservative | 1871 | | - |
| Lambton | Timothy Blair Pardee | Liberal | 1867 | Commissioner of Crown Lands in Mowat ministry after December 4, 1873 | - |
| Lanark North | Daniel Galbraith | Liberal | 1867 | resigned August 1, 1872 to run federally | - |
| Lanark North | William Clyde Caldwell | Liberal | 1872 | elected August 23, 1872 | - |
| Lanark South | Abraham Code | Conservative | 1869 | | - |
Leeds North and Grenville North | Henry Merrick | Conservative | 1871 | | - |
| Leeds South | Herbert Stone MacDonald | Conservative | 1871 | resigned January 4, 1874 to accept an appointment as judge | - |
| Leeds South | John Godkin Giles | Conservative | 1873 | elected December 9, 1873 | - |
| Lennox | John Thomas Grange | Conservative | 1871 | | - |
| Lincoln | John Charles Rykert | Conservative | 1867 | | - |
| London | John Carling | Conservative | 1867 | Commissioner of Agriculture and Public Works in Sandfield Macdonald ministry until December 20, 1871; resigned provincial seat July 23, 1872 to keep a seat in the federal parliament | - |
| London | William Ralph Meredith | Conservative | 1872 | elected September 4, 1872 | - |
| Middlesex East | Richard Tooley | Conservative | 1871 | | - |
| Middlesex North | James Sinclair Smith | Liberal | 1867 | | - |
| Middlesex West | Alexander Mackenzie | Liberal | 1871 | Treasurer in Blake ministry from 20 December 1871 to October 25, 1872; resigned provincial seat September 12, 1872 to keep a seat in the federal parliament | - |
| Middlesex West | John Watterworth | Liberal | 1872 | elected September 17, 1872 | - |
| Monck | Lachlin McCallum | Conservative | 1871 | resigned August 2, 1872 to keep a seat in the federal parliament | - |
| Monck | Henry Ryan Haney | Liberal | 1872 | elected September 17, 1872 | - |
| Niagara | Stephen Richards | Conservative | 1867 | Commissioner of Crown Lands in Sandfield Macdonald ministry until December 20, 1871 | - |
| Norfolk North | John Fitzgerald Clarke | Liberal | 1871 | | - |
| Norfolk South | Simpson McCall | Liberal | 1867 | | - |
| Northumberland East | William Wilson Webb | Liberal | 1871 | | - |
| Northumberland West | Alexander Fraser | Liberal | 1867 | | - |
| Northumberland West | Charles Gifford | Conservative | 1872 | | - |
| Ontario North | Thomas Paxton | Liberal | 1867 | | - |
| Ontario South | Abram Farewell | Liberal | 1871 | | - |
| Ottawa | Richard William Scott | Liberal | 1867 | Speaker until December 21, 1871; Commissioner of Crown Lands in Blake ministry after December 20, 1871 and in Mowat ministry after October 25, 1872; resigned December 4, 1873 to accept federal cabinet post in Mackenzie ministry | - |
| Ottawa | Daniel John O'Donoghue | Liberal | 1874 | | - |
| Oxford North | George Perry | Liberal | 1867 | resigned October 31, 1872 to allow Oliver Mowat a seat in the legislature | - |
| Oxford North | Oliver Mowat | Liberal | 1872 | Premier and Attorney General in Mowat ministry after October 25, 1872; elected November 29, 1872 | - |
| Oxford South | Adam Oliver | Liberal | 1867 | | - |
| Peel | John Coyne | Conservative | 1867 | died November 16, 1873 | - |
| Peel | Kenneth Chisholm | Liberal | 1873 | elected December 29, 1873 | - |
| Perth North | Andrew Monteith | Conservative | 1867 | resigned from provincial parliament January 19, 1874 after he was elected to the federal parliament | - |
| Perth North | Thomas Mayne Daly | Conservative | 1874 | | - |
| Perth South | Thomas B. Guest | Conservative | 1871 | | - |
Peterborough East | George Read | Conservative | 1867 | | - |
Peterborough West | Thomas McCulloch Fairbairn | Liberal | 1871 | died May 13, 1874 | - |
Peterborough West | William Hepburn Scott | Conservative | 1874 | elected July 30, 1874 | - |
| Prescott | George Wellesley Hamilton | Conservative | 1871 | | - |
| Prince Edward | James Simeon McCuaig | Conservative | 1871 | resigned August 29, 1872 to run for a federal seat | - |
| Prince Edward | Gideon Striker | Liberal | 1871 | | - |
| Renfrew North | Thomas Deacon | Conservative | 1871 | | - |
| Renfrew South | Eric Harrington | Conservative | 1871 | | - |
| Russell | William Craig | Conservative | 1867 | | - |
| Simcoe North | William Davis Ardagh | Conservative | 1871 | | - |
| Simcoe South | Thomas Roberts Ferguson | Conservative | 1867 | resigned January 18, 1874 due to health problems | - |
| Simcoe South | D'Arcy Edward Boulton | Conservative | 1873 | | - |
| Stormont | William Colquhoun | Conservative | 1867 | Colquhoun's election was declared void September 12, 1871, resulting in a by-election | - |
| Stormont | James Bethune | Liberal | 1872 | elected January 3, 1872 | - |
| Toronto East | Matthew Crooks Cameron | Conservative | 1867 | Provincial Secretary and Registrar in Sandfield Macdonald ministry until December 20, 1871 Leader of the Opposition after December 20, 1871
| - |
| Toronto West | Adam Crooks | Liberal | 1871 | | - |
| Victoria North | Duncan McRae | Conservative | 1871 | | - |
| Victoria South | Samuel Casey Wood | Liberal | 1871 | | - |
| Waterloo North | Moses Springer | Liberal | 1867 | | - |
| Waterloo South | Isaac Clemens | Liberal | 1867 | | - |
| Welland | James George Currie | Liberal | 1871 | Speaker from December 21, 1871 to his resignation on March 29, 1873. | - |
| Wellington Centre | Charles Clarke | Liberal | 1871 | | - |
| Wellington North | Robert McKim | Liberal | 1867 | resigned January 19, 1874 to compete in the 1874 federal election | - |
| Wellington North | John McGowan | Conservative | 1874 | | - |
| Wellington South | Peter Gow | Liberal | 1867 | Provincial Secretary and Registrar in Blake ministry after December 20, 1871 and Mowat ministry after October 25, 1872 | - |
| Wentworth North | Robert Christie | Liberal | 1867 | | - |
| Wentworth South | William Sexton | Liberal | 1867 | | - |
| York East | Hugh Powell Crosby | Liberal | 1867 | | - |
| York North | Alfred Boultbee | Conservative | 1871 | | - |
| York West | Peter Patterson | Liberal | 1871 | | - |