1st Parliament of Ontario
The 1st Parliament of Ontario was in session from September 3, 1867, until February 25, 1871, just prior to the 1871 general election. This was the first session of the Legislature after Confederation succeeding the Legislative Assembly of the Province of Canada. The 1867 general election produced a tie between the Conservative Party led by John Sandfield Macdonald and the Liberal Party led by Archibald McKellar. Macdonald led a coalition government with the support of moderate Liberals.
John Stevenson served as speaker for the assembly.
| Riding | Member | Party |
| Addington | Edmund John Glyn Hooper | Conservative |
| Algoma | Frederick William Cumberland | Conservative |
| Bothwell | Archibald McKellar | Liberal |
| Brant | Hugh Finlayson | Liberal |
| Brant South | Edmund Burke Wood | Conservative |
| Brockville and Elizabethtown | William Fitzsimmons | Conservative |
| Bruce North | Donald Sinclair | Liberal |
| Bruce South | Edward Blake | Liberal |
| Cardwell | Thomas Swinarton | Conservative |
| Carleton | Robert Lyon | Liberal |
| Cornwall | John Sandfield Macdonald | Conservative-Liberal coalition |
| Dundas | Simon S. Cook | Liberal |
| Durham East | Arthur Trefusis Heneage Williams | Conservative |
| Durham West | John McLeod | Liberal |
| Elgin East | Daniel Luton | Conservative |
| Elgin West | Nicol McColl | Conservative |
| Essex | Solomon Wigle | Conservative |
| Frontenac | Henry Smith | Conservative |
| Frontenac | Delino Dexter Calvin | Conservative |
| Glengarry | James Craig | Conservative |
| Grenville South | Mcneil Clarke | Conservative |
| Grey North | Thomas Scott | Conservative |
| Grey South | Abram William Lauder | Conservative |
| Haldimand | Jacob Baxter | Liberal |
| Halton | William Barber | Liberal |
| Hamilton | James Miller Williams | Liberal |
| Hastings East | Henry Corby | Conservative |
| Hastings North | George Henry Boulter | Conservative |
| Hastings West | Ketchum Graham | Conservative |
| Huron North | William Torrance Hays | Conservative |
| Huron South | Robert Gibbons | Conservative |
| Huron South | Isaac Carling | Liberal |
| Kent | John Smith | Liberal |
| Kingston | Maxwell W. Strange | Conservative |
| Lambton | Timothy Blair Pardee | Liberal |
| Lanark North | Daniel Galbraith | Liberal |
| Lanark South | William McNairn Shaw | Conservative |
| Lanark South | Abraham Code | Conservative |
| Leeds North and Grenville North | Henry Dolphus Smith | Liberal |
| Leeds South | Benjamin Tett | Conservative |
| Lennox | John Stevenson | Conservative |
| Lincoln | John Charles Rykert | Conservative |
| London | John Carling | Conservative |
| Middlesex East | James Evans | Liberal |
| Middlesex North | James Sinclair Smith | Liberal |
| Middlesex West | Nathaniel Currie | Conservative |
| Monck | George Secord | Conservative |
| Niagara | Donald Robertson | Conservative |
| Niagara | Stephen Richards | Conservative |
| Norfolk North | James Wilson | Conservative |
| Norfolk South | Simpson McCall | Liberal |
| Northumberland East | John Eyre | Liberal |
| Northumberland West | Alexander Fraser | Liberal |
| Ontario North | Thomas Paxton | Liberal |
| Ontario South | William McGill | Liberal |
| Ottawa | Richard William Scott | Liberal |
| Oxford North | George Perry | Liberal |
| Oxford South | Adam Oliver | Liberal |
| Peel | John Coyne | Conservative |
| Perth North | Andrew Monteith | Conservative |
| Perth South | James Trow | Liberal |
| Peterborough East | George Read | Conservative |
| Peterborough West | John Carnegie | Conservative |
| Prescott | James P. Boyd | Liberal |
| Prince Edward | Absalom Greeley | Conservative |
| Prince Edward | William Anderson | Liberal |
| Renfrew North | John Supple | Liberal |
| Renfrew North | Thomas Murray | Conservative |
| Renfrew South | John Lorn McDougall | Liberal |
| Russell | William Craig | Conservative |
| Simcoe North | William Lount | Liberal |
| Simcoe South | Thomas Roberts Ferguson | Conservative |
| Stormont | William Colquhoun | Conservative |
| Toronto East | Matthew Crooks Cameron | Conservative |
| Toronto West | John Wallis | Conservative |
| Victoria North | Alexander Peter Cockburn | Liberal |
| Victoria South | Thomas Matchett | Liberal |
| Waterloo North | Moses Springer | Liberal |
| Waterloo South | Isaac Clemens | Liberal |
| Welland | William Beatty | Liberal |
| Wellington Centre | Alexander David Ferrier | Conservative |
| Wellington North | Robert McKim | Liberal |
| Wellington South | Peter Gow | Liberal |
| Wentworth North | Robert Christie | Liberal |
| Wentworth South | William Sexton | Liberal |
| York East | Hugh Powell Crosby | Liberal |
| York North | John McMurrich | Liberal |
| York West | Thomas Grahame | Conservative |