The 6th Parliament of the Province of Canada was in session from 1858 to June 1861. Elections were held in the Province of Canada in December 1857. Sessions were held in Toronto in 1858 and then in Quebec City from 1859. In 1857, Queen Victoria had chosen Ottawa as the permanent seat for the Canadian government.
Canada East
Notes:
- formerly Montreal (county)
- formerly Sherbrooke (county) and Wolfe
Louis-Bonaventure Caron was elected but his election was declared invalid and Charles-François Fournier was declared elected in June 1858. Lewis Thomas Drummond was defeated in a by-election in Shefford in September 1858 after he was appointed to cabinet; Asa Belknap Foster was elected to the seat. John O'Farrell was elected but the election was declared invalid; Lewis Thomas Drummond was elected in a by-election in October 1858. John Joseph Caldwell Abbott was declared elected in March 1860 after an inquiry by a committee of the Legislative Assembly. Louis-Honoré Gauvreau died in office in 1858; George Caron was elected in a by-election in December 1858.
Canada West
| Riding | Member | Party |
|---|---|---|
| East Brant | David Christie | Reformer |
| Hugh Finlayson (1858) | ||
| West Brant | Herbert Biggar | Reformer |
| Brockville | George Sherwood | Conservative |
| Carleton | William F Powell | Conservative |
| Cornwall | John Sandfield Macdonald | Reformer |
| Dundas | James William Cook | Reformer |
| East Durham | Francis H. Burton | Conservative |
| West Durham | Henry Munro | Reformer |
| East Elgin | Leonidas Burwell | Reformer |
| West Elgin | George Macbeth | Conservative |
| Essex | John McLeod | Conservative |
| Frontenac | Henry Smith, Jr | Conservative |
| Glengarry | Donald Alexander Macdonald | Reformer |
| Grenville | William Patrick | Reformer |
| Grey | John Sheridan Hogan | Independent Liberal |
| Haldimand | Michael Harcourt | |
| Halton | John White | Reformer |
| Hamilton | Isaac Buchanan | Independent |
| North Hastings | George Benjamin | Conservative |
| South Hastings | Lewis Wallbridge | Reformer |
| Huron & Bruce | John Holmes | Reformer |
| Kent | Archibald McKellar | Reformer |
| Kingston | John A. Macdonald | Liberal-Conservative |
| Lambton | Malcolm Cameron | Grit |
| Hope Fleming Mackenzie (1861) | Reformer | |
| North Lanark | Robert Bell | Reform |
| South Lanark | Andrew W. Playfair | |
| North Leeds & Grenville | Basil R. Church (died 1858) | Reformer |
| Ogle Robert Gowan (1858) | Conservative | |
| South Leeds | Benjamin Tett | Conservative |
| Lennox & Addington | David Roblin | Reformer |
| Lincoln | William Hamilton Merritt | Reformer |
| London | John Carling | Liberal-Conservative |
| East Middlesex | Marcus Talbot | Conservative |
| West Middlesex | Angus Peter McDonald | |
| Niagara (town) | John Simpson | Conservative |
| Norfolk | Walker Powell | Reformer |
| East Northumberland | John R Clark | Reformer |
| West Northumberland | Sidney Smith | Reformer |
| North Ontario | Joseph Gould | Reformer |
| South Ontario | Oliver Mowat | Reformer |
| Ottawa | Richard William Scott | Liberal-Conservative |
| Oxford | George Brown | Reformer |
| South Oxford | George Skeffington Connor | Reformer |
| Peel | James Cox Aikins | Clear Grit |
| Perth | Thomas Mayne Daly | Liberal-Conservative |
| Peterborough | Thomas Short | Reformer |
| Prescott | Henry Wellesly McCann | Conservative |
| Prince Edward | W C Dorland | Conservative |
| Renfrew | John Lorn McDougall | Reformer |
| William Cayley (1858) | Tory | |
| Russell | John W Loux | |
| North Simcoe | Angus Morrison | Reform |
| South Simcoe | Thomas Roberts Ferguson | Conservative |
| Stormont | William D. Mattice | Reformer |
| Toronto | George Brown | Reformer |
| Toronto | John Beverley Robinson | Conservative |
| Victoria | John Cameron | Conservative |
| North Waterloo | Michael Hamilton Foley | Reform |
| South Waterloo | William Scott | Conservative |
| Welland | Gilbert McMicken | Reformer |
| North Wellington | Charles Allan | |
| James Ross (1859) | Reformer | |
| South Wellington | David Stirton | Reformer |
| North Wentworth | William Notman | Reformer |
| South Wentworth | Joseph Rymal | Reformer |
| East York | Amos Wright | Reformer |
| North York | Joseph Hartman | Reformer |
| Adam Wilson (1860) | Reformer | |
| West York 1 | William Pearce Howland | Reformer |
Notes:
- formerly South York; prior to that, 1st York
David Christie resigned his seat to take a seat on the Executive Council; Hugh Finlayson was elected in a by-election in 1858. John Lorn McDougall resigned his seat to allow William Cayley to be elected in a by-election held in March 1858. Joseph Hartman died in November 1859; Adam Wilson was elected to his seat in 1860. Malcolm Cameron accepted an appointment to the Legislative Council in 1860; Hope Fleming Mackenzie was elected to the seat in a by-election in 1861. Basil Church died in 1858; Ogle Robert Gowan was elected in a by-election later that year. James Ross was elected in an 1859 by-election after the election of Charles Allan was appealed.