| Aberdeen | | Toronto, Hamilton and Buffalo | | |
| Achray | | Canadian National | | |
| Actinolite | | Bay of Quinte | | Defunct. |
| Acton GO | 2013 | GO Transit | | Constructed for restoration of passenger service with the GO Kitchener line. |
| Acton GTR | 1908 | Grand Trunk | | Demolished. |
| Acton GWR | | Great Western | | Likely demolished. |
| Agincourt GO | 1982 | GO Transit | | Constructed for restoration of passenger service with the GO Stouffville line. |
| Agincourt O&Q | | Ontario and Quebec | | Defunct. Likely demolished. |
| Agincourt T&N | 1871 | Toronto and Nipissing | | Original Agincourt station. Later acquired by GTR, then CN. Demolished. |
| Ailsa Craig | | | | Defunct. |
| Albion | | Canadian National | | |
| Aldershot | | | | Actively used by Via Rail and GO Transit |
| Alexandria | 1917 | Grand Trunk | | Designated Heritage Railway Station. Canada Heritage Train Register. Actively used by Via Rail. |
| Algonquin Park | | Grand Trunk | | |
| Allandale GTR | 1905 (opened) | Grand Trunk | Spier and Rohns | Fourth Allandale station. |
| Allandale NRC | | Northern | | |
| Allandale OS&HURR | 1853 | Ontario, Simcoe and Huron Union | | First Allandale station. |
| Allandale Waterfront GO | 2012 (opened) | GO Transit | | |
| Allanwater Bridge | | | | Via Rail flag stop |
| Allenford | | Grand Trunk | | Likely demolished. |
| Alliston CPR | Canadian Pacific | | | Likely demolished. |
| Alliston GTR | | Grand Trunk | | Defunct. |
| Alma | | Wellington, Grey and Bruce | | Demolished. |
| Almonte | | Canadian Pacific | | |
| Alsfeldt | | Grand Trunk | | |
| Alton | | Canadian Pacific | | |
| Alvinston | | New York Central | | |
| Amherstburg | | Michigan Central | | |
| Angus | | Grand Trunk | | |
| Anson | | Canadian National | | |
| Appin | | Canadian National | | |
| Apple Hill | | Canadian Pacific | | |
| Ardbeg | | Canadian National | | |
| Ardendale | | Canadian Pacific | | |
| Argyle | | Grand Trunk | | |
| Arkell | | Canadian Pacific | | |
| Armstrong | | | | Actively used by Via Rail. |
| Arnprior | | Canadian National | | |
| Arthur | | Canadian Pacific | | |
| Athens | | Canadian National | | |
| Atherley Junction | | Grand Trunk | | |
| Atherley Narrows | | | | |
| Atikokan CN | 1923 | Canadian National | | Defunct. |
| Atikokan O&RR | | Ontario and Rainy River | | Demolished and replaced by CN station in 1923. |
| Atwood | | Grand Trunk | | |
| Auburn | | Canadian Pacific | | |
| Auden | | | | Actively in use by Via Rail. |
| Aultsville | | Canadian National | | Original location has been flooded but the station was moved to Upper Canada Village and survives today. |
| Aurora | 1900 | Grand Trunk | | Canada Heritage Train Register |
| Aurora T&Y | | Toronto and York Radial | | |
| Avening | | Northern and Northwestern | |
| Avonmore | | Canadian Pacific | | |
| Aylmer | | Grand Trunk | | |
| Ayr | | Canadian Pacific | | |
| Ayton | | Grand Trunk | | |
| Azilda | | | | Actively used by Via Rail. |
| Baden | | Grand Trunk | | Defunct. Likely demolished. |
| Bala CNoR | | Canadian Northern | | Defunct. |
| Bala CPR | | Canadian Pacific | | Defunct. |
| Bancroft | 1883–84 (circa) | Central Ontario | | Later owned by CN. Station became defunct but was renovated
and later used by the local Chamber of Commerce. |
| Barwick | | Ontario and Rainy River | | Defunct. Station building has been moved from its original location. |
| Batchewana | | Algoma Central | | Defunct. |
| Bayview | 2019 | OC Transpo | | O-Train interchange station between the Confederation Line and Trillium Line in Ottawa. |
| Beachville | | Grand Trunk | | Defunct. |
| Beamsville | | Grand Trunk | | Defunct. |
| Bear Lake | | Canadian National | | Defunct. |
| Beaverton | | Grand Trunk | | Came under CN ownership. Defunct. |
| Bedell | | Canadian Pacific | | Defunct. Bedell was a small railway community near Kemptville which was mainly composed of CPR workers and their families. It was originally Kemptville Junction, then Kempton, and finally Bedell sometime after WWI. |
| Beeton | | Grand Trunk | | Defunct. |
| Bell Ewart | | Northern Railway of Canada | | Defunct. |
| Belle River | 1872 (before/circa) | Great Western | | Disused, likely demolished |
| Belleville CNoR | 1911 | Canadian Northern | | Came under CP ownership. In use until 1966. Demolished in 1976. |
| Belleville GTR | 1856 | Grand Trunk | GTR Type B | National Historic Site. Designated Heritage Railway Station. Canada Heritage Train Register. |
| Belleville Via | 2012 | Via Rail | | Actively used by Via Rail. |
| Benny | | | | Actively used by Via Rail |
| Bethany | | Grand Trunk | | Defunct. Originally Port Hope, Lindsay and Beaverton Railway. |
| Biscotasing | | | | Actively used by Via Rail. |
| Blair GTR | 1872–73? | Grand Trunk | | Defunct and likely demolished. The Doon branch through Blair was abandoned in the 1950s and tracks were removed sometime after. |
| Bloomfield | | Central Ontario | | |
| Blythe CN | | Canadian National | | Now used as a bed and breakfast. |
| Blythe CPR | | Canadian Pacific | | Station has been restored and relocated. |
| Bobcaygeon | | Canadian Pacific | | Defunct. |
| Bolger | | Canadian National | | Defunct. |
| Bolkow | | | | Actively used by Via Rail. |
| Bolton | | Canadian Pacific | | Disused. Service restoration under a GO Transit Bolton line has been proposed. |
| Bonarlaw | | Canadian National | | Defunct. The community was originally known as Central Ontario Junction. |
| Bracebridge | | | | Disused |
| Brampton | 1907 | Grand Trunk | | Designated Heritage Railway Station. Canada Heritage Train Register. Actively used by Via Rail and GO Transit. |
| Brantford GTR | 1905 | Grand Trunk | Spier and Rohns | Designated Heritage Railway Station. Canada Heritage Train Register. Actively used by Via Rail. |
| Brantford Union Station | 1916–17 | Lake Erie and Northern
Brantford and Hamilton | Theodore Videto | Joint station used by both railways designed in the New England Colonial style. B&H service ended in 1931, though LE&N service continued until 1955. The station stood vacant for 3 years before being demolished in 1958. Due to its location, the station site was never redeveloped, and the ruins of the station's foundations are still visible. |
| Brussels | | Grand Trunk | | Defunct. |
| Buda | | Canadian Pacific | | Defunct. |
| Burford | | Grand Trunk | | Defunct. |
| Burgessville | | Grand Trunk | | Defunct. |
| Burk's Falls | | Grand Trunk | | Defunct. |
| Burnt River | | Grand Trunk | | Defunct. |
| Byng Inlet | | Canadian Pacific | | Defunct. |
| Caledon | | Canadian Pacific | | Defunct. The station is now a private home. |
| Caledonia | | Grand Trunk | | Defunct. |
| Callander | | Grand Trunk | | Defunct. |
| Camden East | | Canadian Northern | | Defunct. |
| Camlachie | | Grand Trunk | | Defunct. |
| Campbellcroft | | Canadian National | | Defunct. |
| Campbellford | | Grand Trunk | | Defunct. |
| Campbellville | | Canadian Pacific | | Defunct. |
| Camp Borden CNR | | Canadian National | | Temporary station which was open during the Second World War. |
| Camp Borden CPR | | Canadian Pacific | | Defunct. |
| Canfield | | Grand Trunk | | Defunct. |
| Canfield Junction | | Grand Trunk | | Defunct. Later owned by CN. |
| Canyon (ACR) | | Algoma Central | | Disused ACR station in Agawa Canyon. |
| Canyon | | | | Actively used by Via Rail. Not to be confused with Agawa Canyon station in Northeastern Ontario. |
| Capreol | 1915 | Canadian Northern | | Actively used by Via Rail. |
| Caradoc | | Canadian Pacific | | |
| Caramat | | | | Actively used by Via Rail. |
| Cardinal | | Grand Trunk | | Defunct. |
| Cargill | | Grand Trunk | | Defunct. Later came under CN ownership. Now used as a private home. |
| Carleton Junction | | Canadian Pacific | | |
| Carleton Place | 1921–22 | Canadian Pacific | | Designated Heritage Railway Station. Canada Heritage Train Register. Disused. |
| Cartier | 1910 | Canadian Pacific | | Designated Heritage Railway Station. Heritage Registe. Actively used by Via Rail. |
| Casselman | 1938–39 | Canadian National | | Designated Heritage Railway Station. Canada Heritage Train Register. Actively used by Via Rail. |
| Cataract | | Canadian Pacific | | |
| Cavan | | Canadian Pacific | | |
| Cayuga | | Great Western | | Disused, likely demolished |
| Chalk River | | Canadian Pacific | | Defunct. |
| Charing Cross | | Michigan Central | | Defunct. |
| Chapleau | | | | Actively used by Via Rail. |
| Chatham | 1879 | Great Western | | Designated Heritage Railway Station. Canada Heritage Train Register. Actively used by Via Rail. |
| Chelmsford | | | | Actively used by Via Rail. |
| Chesley | | Grand Trunk | | Defunct. |
| Chesterville | | Canadian Pacific | | Defunct. |
| Clarabelle | | Algoma Eastern | | Sat at the junction of seven rail lines near Sudbury, and once had the highest tonnage of freight pass through of any station in Canada. |
| Claremont | | Canadian Pacific | | Defunct but the Havelock Subdivision is still active and restored passenger service has been proposed. |
| Clarendon | | Canadian Pacific | | Defunct. The station building is now a private home. |
| Clarkson GWR | 1853 | Great Western | | Also known as Clarkson's or Clarkson's Corner |
| Clarkson GO | 1967 (circa) | GO Transit | | Actively used by GO Transit. |
| Clifford | | Grand Trunk | | Defunct. |
| Clifton | 1879 (or earlier) | Great Western | | Likely demolished |
| Clinton | | Canadian National | | |
| Clute | | | | Actively used by Ontario Northland Railway. |
| Cobalt | 1910 | Temiskaming and Northern Ontario | Edwardian Classical (John M. Lyle) | Canada Heritage Train Register. Used as a museum and offices. |
| Coboconk T&N | 1872 | Toronto and Nipissing | | Destroyed by fire around 1908. Replaced by the second station. |
| Coboconk GTR | | Grand Trunk | | Built by the Grand Trunk Railway sometime after 1908. Later came under CN ownership. Became defunct and was relocated to a park for restoration. |
| Cobourg | 1910–1911 | Grand Trunk | Romanesque Revival (J.M. Bearbrook, adapted by L.M. Watts) | Designated Heritage Railway Station. Canada Heritage Train Register. Actively used by Via Rail. |
| Cochrane | | | | Actively used by Ontario Northland Railway. |
| Coe Hill | 1884 (circa) | Central Ontario | | Built by the Central Ontario Railway and later came under Canadian Northern and Canadian National ownership. The section of line was abandoned in 1984 and the station became defunct. The station building was relocated to the community park and was restored. |
| Colborne GTR | | Grand Trunk | | Grand Trunk station. Later came under CN ownership. Defunct. |
| ColborneCPR | | Canadian Pacific | | Defunct. |
| ColdwaterCPR | | Canadian Pacific | | Defunct. |
| Coldwater GTR | | Grand Trunk | | Defunct. Seems to have been replaced by a later CN station. |
| Collingwood NRC | | Northern Railway of Canada | | Original Collingwood station, which was destroyed by a fire in 1873. |
| Collingwood GTR | | Grand Trunk | | Second station, constructed after the loss of the first. Suffered a fire in 1932 which destroyed much of the building, but it was repaired and continued to be used until the end of passenger service in 1960. Later used as a town museum until 1997, when it was demolished due to structural problems. A replica station was constructed in 1998 as a new town museum. |
| Collins | | | | Actively used by Via Rail. |
| Comber | 1872–73 | Canada Southern | | Designated Heritage Railway Station. Canada Heritage Train Register. Came under CN ownership. Defunct. |
| Coniston CN | 1912 | Canadian Northern | | Created to operate the interlock between CNoR and CPR tracks. The first station building consisted of only a boxcar and was operated by a single station agent. This was replaced by a permanent station building two years later. The manual interlock was replaced by an automatic electrical system in 1934. The station closed in 1967 and was rented out to the Chevron Company until 1977, when this operation also closed. The building was demolished in 1978. |
| Coniston CPR | 1912 | Canadian Pacific | | For the CPR junction station near Coniston, see Romford station. Small railway station in Coniston proper operated by a single station agent. The station was notably used to ship fresh blueberries to Toronto in summers. It was shut down in 1970 and demolished sometime after. |
| Cookstown | | Canadian National | | Defunct. |
| Cooksville CP | 1912 | Canadian Pacific | | Stood until 1975 |
| Cooksville CVR I | 1878 | Credit Valley | | Destroyed by fire in 1883 |
| Cooksville CVR II | 1883 (circa) | Credit Valley/Canadian Pacific | | Likely demolished |
| Cooksville GO I | 1981 (circa) | GO Transit | | Demolished/rebuilt extensively |
| Cooksville GO II | 2020 (in progress) | GO Transit | | Extensive rebuild of 1980s commuter station |
| Copelands Landing | | | | Actively used by Via Rail. |
| Copetown | | Grand Trunk | | Defunct. |
| Copper Cliff | | Canadian Pacific | | Likely demolished |
| Coral Rapids | | | | Actively used by Ontario Northland Railway. |
| Corbetton | | Canadian Pacific | | Defunct. |
| Corinth | | Grand Trunk | | Defunct. |
| Courtright | | Michigan Central | | Defunct. |
| Craigleith | | Grand Trunk | | Defunct. The station building has been converted into a local museum. |
| Craigvale NRC | | Northern Railway of Canada | | First station in Craigvale. Burned down in 1896. |
| Craigvale GTR | 1896 (circa) | Grand Trunk | | Second station in Craigvale. The station was demolished in 1964. |
| Creemore | | Grand Trunk | | Defunct. |
| Curries | | Grand Trunk | | Defunct. |
| Dalton | | | | Actively used by Via Rail. |
| Devon | | | | Actively used by Via Rail. |
| Doon | | Grand Trunk | | Defunct. Rails removed. Station is likely demolished. Possibly preceded by earlier Great Western station. |
| Elmira | | Guelph and Goderich / CPR | | Defunct and likely demolished. |
| Elsas | | Canadian National | | Actively used by Via Rail. |
| Englehart I | | | | Replaced by modern station |
| Englehart II | | | | Passenger service discontinued, freight operations only |
| Ernestown | 1855 | Grand Trunk | GTR Type C, Italianate style | Designated Heritage Railway Station. Canada Heritage Train Register. Abandoned. |
| Esher | | | | Actively used by Via Rail. |
| Espanola | 1911 | Algoma Eastern | | Demolished in 1970s-90s. |
| Essex | 1887 | Michigan Central | | |
| Fallowfield | 2002 (rail opening) | Via Rail | | Suburban Ottawa station in Barrhaven. |
| Farlane | | | | Actively used by Via Rail. |
| Felix | | | | Actively used by Via Rail. |
| Ferland | | | | Actively in use by Via Rail. |
| Flindt Landing | | | | Actively used by Via Rail. |
| Foleyet | | | | Actively used by Via Rail. |
| Fort Frances | 1913 | Canadian Northern | | Designated Heritage Railway Station. Heritage Registe. Came under CN ownership. Disused. |
| Franz | | | | Actively used by Via Rail former ACR stop. |
| Fraserdale | | | | Actively used by Ontario Northland Railway. |
| Galt CPR | 1898–1900 | Canadian Pacific | Edward Maxwell | Designated Heritage Railway Station. Canada Heritage Train Register. Disused. |
| Georgetown | 1858 | Grand Trunk | Francis Thompson | Designated Heritage Railway Station. Canada Heritage Train Register. Actively used by Via Rail and GO Transit. |
| Girdwood | | | | Actively used by Via Rail. |
| Glencoe GWR I | 1854 | Great Western | | |
| Glencoe GWR II | 1856 | Great Western | | |
| Glencoe GTR I | 1900 | Grand Trunk | | |
| Glencoe GTR II | 1904 | Grand Trunk | | |
| Gravenhurst | | | | Used as a boarding point for Ontario Northland motor coach service after rail service discontinuation |
| Gogama | | | | Actively used by Via Rail. |
| Grimsby GWR I | 1853 | Great Western | | |
| Grimsby GWR II | | Great Western | | Destroyed by fire in 1900 |
| Grimsby GTR | 1902 (circa) | Grand Trunk | | Destroyed by electrical fire in 1994 |
| Grimsby | 1990s | Via Rail | | Actively used by Via Rail. |
| Grimsby Park/Grimsby Beach | | | | Likely demolished |
| Guelph Central | 1911 | Grand Trunk | | Designated Heritage Railway Station. Canada Heritage Train Register. Actively used by Via Rail and GO Transit. |
| Guildwood | 1967 | Canadian National | | Actively used by Via Rail and GO Transit. |
| Hamilton GTR | 1856 | Grand Trunk | | Demolished 1931 |
| Hamilton TH&BR I | 1895 | Toronto, Hamilton and Buffalo | William Stewart and Son | Demolished 1933 |
| Hamilton TH&BR II | 1931–1933 | Toronto, Hamilton and Buffalo | Streamline Moderne (Fellheimer and Wagner) | Designated Heritage Railway Station. Canada Heritage Train Register. Actively used by GO Transit. |
| Havelock | 1914–1929 | Canadian Pacific | | Designated Heritage Railway Station. Canada Heritage Train Register. Disused. |
| Hawk Junction | | Algoma Central | | Disused ACR station |
| Hespeler GTR | | Grand Trunk | | Defunct. The Hespeler Heritage Railway Station Association attempted to restore the station in the 1990s before it was destroyed by arson. |
| Hespeler GRR | | Grand River | | Defunct. Terminal station of the Grand River Railway Hespeler branch. |
| Hillsport | | | | Actively used by Via Rail |
| Hornepayne | 1913 | Canadian Northern | | Designated Heritage Railway Station. Canada Heritage Train Register. Known as Fitzbach station until 1920. Building is abandoned but station is actively used by Via Rail. |
| Huntsville N&PJ | 1885 | Northern and Pacific Junction | | Likely demolished |
| Huntsville CN | 1924 | Canadian National | | Designated Heritage Railway Station. Canada Heritage Train Register. Disused. |
| Hurdman | 2019 | OC Transpo | | O-Train Confederation Line station in Ottawa. |
| Ingersoll | 1886 | Great Western/Grand Trunk | | Original station building is a disused station is still actively used by Via Rail. |
| Hamilton CNR | 1931 | Canadian National | John Schofield | |
| Kenora (Rat Portage) | 1899 | Canadian Pacific | Picturesque | Designated Heritage Railway Station. Canada Heritage Train Register. Disused. |
| Kinogama | | | | Actively used by Via Rail |
| Kingsville | 1889 | Lake Erie, Essex, and Detroit River | Albert Kahn | Now used as a restaurant |
| Kitchener (Berlin) | 1897 | Grand Trunk | | Actively used by Via Rail,GO Transit, and GEXR |
| Kitchener Junction | | Grand River/Kitchener and Waterloo Street | | Passenger interchange station between the Grand River Railway and the Kitchener and Waterloo Street Railway, constructed after the relocation of Grand River Railway tracks from the western end of King Street in downtown Kitchener. Southern terminus and depot of the street railway. Later evolved into a trolleybus terminal and depot. After the terminal closed, the building was reused as the Rockway Centre. |
| Kitchener Queen Street | | Grand River | | Demolished in 1970s |
| Kormak | | | | Actively used by Via Rail. |
| Laforest | | | | Actively used by Via Rail. |
| Larchwood | | | | Actively used by Via Rail. |
| Lees | 2019 | OC Transpo | | O-Train Confederation Line station in Ottawa. |
| Levack | | | | Actively used by Via Rail. |
| Little Current | 1912 (circa) | Algoma Eastern | | Demolished. |
| Lochalsh | | | | Actively used by Via Rail. |
| London CNR I | 1935 | Canadian National | John Schofield | Demolished ca. 1960 |
| London CNR II | 1963 | Canadian National | | Now part of Via station |
| London CPR | 1893 | Canadian Pacific | | Now a restaurant |
| London GWR | 1853 | Great Western | | Demolished 1935 |
| London MCR | 1887 | Michigan Central | Samuel Frank Peters | Demolished 1937 |
| Long Branch | | | | Defunct |
| Longlac | | | | Actively used by Via Rail. |
| Lyon | 2019 | OC Transpo | | O-Train Confederation Line station in Ottawa. |
| Malachi | | | | Actively used by Via Rail. |
| Malton GO I | 1974 | GO Transit | | Constructed for the start of GO service to Malton |
| Malton GO II | 2014 | GO Transit | | Extensive rebuild of existing GO station |
| Malton GTR I | 1856 | Grand Trunk | | Replaced by 1912 station |
| Malton GTR II | 1912 | Grand Trunk | | Demolished by CN Rail in 1973 |
| Matheson I | 1908 (circa) | Temiskaming and Northern Ontario | | Destroyed in Matheson Fire |
| Matheson II | 1916 (circa) | Temiskaming and Northern Ontario | | Disused |
| McKee's Camp | | | | Actively used by Via Rail. |
| McKerrow | | Canadian Pacific | | Demolished sometime after 1975 |
| Meadowvale CVR | 1878 (circa) | Credit Valley | | Downgraded to flag stop in 1960. Demolished in summer 1976 after CPR service was discontinued in 1962. |
| Meadowvale GO | 1981 (circa) | GO Transit | | Actively used by GO Transit. |
| Merritton | | | | Likely demolished |
| Metagama | | | | Actively used by Via Rail. |
| Midland CNR | 1944 | Canadian National | John Schofield | Demolished? |
| Mimico I | 1888 (or earlier) | Grand Trunk | | |
| Mimico II | 1915 | Grand Trunk | | Relocated for preservation to Coronation Park |
| Minaki | 1910 | National Transcontinental | | Actively used by Via Rail. |
| Missanabie | | | | Actively used by Via Rail. |
| Moose River | | | | Actively used by Ontario Northland Railway. |
| Moosonee | 1960s | | | Actively used by Ontario Northland Railway. |
| Mount Pleasant LE&N | 1916 | Lake Erie and Northern | CPR | Awaiting restoration |
| Mud River | | | | Actively used by Via Rail. |
| Musk | | | | Actively used by Via Rail. |
| Nairn AER | | Algoma Eastern | | Likely demolished shortly after AER was acquired by CPR. |
| Nairn CPR | | Canadian Pacific | | Demolished. |
| Nakina | | | | Actively in use by Via Rail. |
| Napanee | 1856 | Grand Trunk | | Actively used by Via Rail. |
| Nemegos | | | | Actively used by Via Rail. |
| New Hamburg | | Grand Trunk | | Defunct and likely demolished. |
| New Liskeard | 1906 | | | Disused |
| Nicholson | | | | Actively used by Via Rail. |
| North Bay | | | | Used for motor coach services only |
| North Lake CNoR | 1907 (circa) | Canadian Northern | | Replaced earlier PAD&W station. Station and track section were abandoned by CN in 1923. Replica of station was constructed in 1977, but is now demolished. Station was intentionally burned by the Ontario Ministry of Natural Resources in the late 1970s response to conservation efforts. |
| North Lake PAD&W | 1893 (circa) | Port Arthur, Duluth and Western | | A log freight shed. Replaced by later CNoR station. Likely demolished. |
| O'Brien | | | | Actively used by Via Rail. |
| O'Donnell | | Algoma Eastern | | Demolished. |
| Oakville GWR | 1856 | Great Western | | Demolished |
| Oakville | | | | Actively used by Via Rail and GO Transit. |
| Oba | | | | Former transfer station with the Algoma Central Railway, actively used by Via Rail. |
| Oshawa CN | 1960s | Canadian National | | Demolished and replaced with GO station. |
| Oshawa GTR | 1856? | Grand Trunk | | Likely demolished; replaced with CN station. |
| Oshawa GO | | GO Transit | | Actively used by Via Rail and GO Transit. |
| Ottawa | 1966 | | John B. Parkin Associates | |
| Ottawa Union | 1912 | | Ross and MacFarlane | Now occupied by the Senate of Canada |
| Ottermere | | | | Actively used by Via Rail. |
| Parliament | 2019 | OC Transpo | | O-Train Confederation Line station in Ottawa. |
| Parry Sound CNR | | | | Actively used by Via Rail for eastbound trains only |
| Parry SoundCPR | | | | Actively used by Via Rail for westbound trains only |
| Petersburg | | Grand Trunk | | Station has been moved from its original location to the Doon Pioneer Village and restored. |
| Pimisi | 2019 | OC Transpo | | O-Train Confederation Line station in Ottawa. |
| Pogamasing | | | | Actively used by Via Rail. |
| Port Credit CN | | Canadian National | | Replaced earlier GWR station which was destroyed by fire |
| Port Credit GO | 1967 | GO Transit | | Replaced earlier CN station, actively used by GO Transit. |
| Port Credit GWR | 1855 | Great Western | | Destroyed by fire late 1910s-early 1920s |
| Port Hope | 1856 | Grand Trunk | | Designated Heritage Railway Station. Canada Heritage Train Register. Actively used by Via Rail. |
| Prescott | 1855 | Grand Trunk | | Designated Heritage Railway Station. Canada Heritage Train Register. No longer has regular passenger service. |
| Preston Junction | | Preston and Berlin Street/Electric
Galt, Preston and Hespeler | | Marked a junction point between the two railways, which were later merged into the Grand River Railway. Used as a terminal point for Canadian Pacific Transport Companycoach service from 1925 until the end of CPcoach service in the area. After the end of passenger services it was used as a freight crew office before being demolished in the mid-1970s. |
| Ramsey | | | | Actively used by Via Rail. |
| Red Lake Road | | | | Actively used by Via Rail. |
| Redditt | | | | Actively used by Via Rail. |
| Rice Lake | | | | Actively used by Via Rail. |
| Richan | | | | Actively used by Via Rail. |
| Rideau | 2019 | OC Transpo | | O-Train Confederation Line station in Ottawa. |
| Roberts | | | | Actively used by Via Rail. |
| Romford | 1905 | Canadian Pacific | | The original station in the Coniston area. Romford was a CPRcontrol point operated by a three-man crew (one agent and two operators) and controlled the three tracks which passed through the area. The station was used to manage freight interchange with the Inco Railway, including ore trains from Levack. The station closed in August 1979. |
| Ruel | | | | Actively in use by Via Rail. |
| Sarnia Tunnel | 1891 | Grand Trunk | Joseph Hobson | |
| Savant Lake | 1913 | | | Actively used by Via Rail. |
| Searchmont | | Algoma Central | | Designated Heritage Railway Station. Disused. |
| Sheahan | | | | Actively used by Via Rail. |
| Silver Mountain CNoR | 1907 (circa) | Canadian Northern | Plan 100-3 (Ralph Benjamin Pratt) | Rail service ended in 1938. Afterward, station was used as a private residence, bar, and restaurant successively. Today the office of the Silver Mountain and Area Historical Society. |
| Silver Mountain PAD&W | | Port Arthur, Duluth and Western | | Replaced by newer CNoR station. Likely demolished. |
| Sioux Lookout | 1911 | Grand Trunk Pacific | | Built by GTPR, also used by the NTR. Actively used by Via Rail. |
| South Parkdale | | | | Replaced with Sunnyside station by GTR in 1912 |
| South River | 1884 | Northern and Pacific Junction | | Disused |
| St. Catharines GWR | 1853 | Great Western | | Demolished? |
| St. Catharines GTR | 1898 | Grand Trunk | | Demolished? |
| St. Catharines GTR II | 1917 | Grand Trunk | | Actively used by Via Railand GO Transit. |
| St. Jacobs | | Grand Trunk | | Likely demolished. |
| St. Marys | 1907 | Grand Trunk | | |
| St. Marys Junction | 1858 | Grand Trunk | | |
| St. Thomas CASO | 1873 | Canada Southern | Edgar Berryman | |
| Stoney Point | 1911 (circa) | Grand Trunk | | Disused; possibly demolished |
| Stralak | | | | Actively used by Via Rail. |
| Stratford GTR I | 1856 | Grand Trunk | | |
| Stratford GTR II | 1913 | Grand Trunk | | Actively used by Via Rail. |
| Strathroy | | | | Via Rail flag stop |
| Stratton | | Ontario and Rainy River | | Defunct. Station has been moved from original location. |
| Sudbury CNR | | Canadian National | | Demolished along with Borgia neighbourhood in urban renewal effort |
| SudburyCPR | 1907 | Canadian Pacific | | Designated Heritage Railway Station. Canada Heritage Train Register. Actively used by Via Rail. |
| Sudbury Junction | | Via Rail | | Actively used by Via Rail. |
| Sultan | | | | Actively used by Via Rail. |
| Summerville | 1878 (circa) | Credit Valley | | Relocated multiple times by preservationists |
| Sunnyside | 1912 | Grand Trunk | | Replaced South Parkdale and Swansea stations |
| Swansea | | | | Replaced by Sunnyside station in 1912 |
| Swastika | 1908 | Temiskaming and Northern Ontario | | Mostly abandoned, remainder used for motor coach services |
| Temagami I | 1907 | Temiskaming and Northern Ontario | | Destroyed by fire c. 1909 |
| Temagami II | 1909 (circa) | Temiskaming and Northern Ontario | | Disused; local heritage structure |
| Thessalon | 1910 (circa) | Canadian Pacific | | Once a CP divisional point. Station was demolished sometime around 1971. |
| Toronto North | 1916 | Canadian Pacific | Darling and Pearson | |
| Toronto Union I | 1858 | (union) | | Demolished 1871 |
| Toronto Union II | 1873 | (union) | Thomas Seaton Scott | Demolished 1927 |
| Toronto Union III | 1927 | (union) | Ross and Macdonald, John M. Lyle | |
| Trenton Junction | | | | Actively used by Via Rail. |
| Tunney's Pasture | 2019 | OC Transpo | | Opened as the western terminus of the O-Train Confederation line in Ottawa. |
| uOttawa | 2019 | OC Transpo | | O-Train Confederation Line station in Ottawa. |
| Uxbridge GTR | 1904 | Grand Trunk | | No longer has regular passenger service, but is a stop on the York–Durham Heritage Railway. |
| Uxbridge T&NR | 1871 (circa) | Toronto and Nipissing | | Likely demolished; replaced by GTR station. |
| Walkerville | | | | Defunct; possibly demolished |
| Washago CNoR | 1906 | Canadian Northern | | Relocated to current station site after loss of GTR station |
| Washago CNR | | Grand Trunk | | Destroyed by fire around 1913 |
| Washago Via | | Via Rail | | Actively used by Via Rail. |
| Wasing | | Canadian National | | Station on the CN Alderdale Subdivision. Disappeared from passenger schedules by the 1960s–70s. Defunct. |
| Waterdown | 1912 | Canadian Pacific | | |
| Waterloo | 1910 | Grand Trunk | | Canada Heritage Train Register. Now used by a menswear retailer. |
| Wawa | | Algoma Central | | Line has been abandoned and the station has likely been demolished. |
| Webbwood | | Canadian Pacific | | Divisional point for the CP Webbwood Subdivision. Likely demolished. |
| Welland GTR | 1914 (circa) | Grand Trunk | | Likely demolished |
| Westree | | | | Actively used by Via Rail. |
| Whitby Junction | 1903 | Grand Trunk | | |
| White River | 1886 | Canadian Pacific | | Actively used by Via Rail. |
| Whitefish | 1889 (or earlier) | Canadian Pacific | | Likely demolished |
| Windsor CN | 1960s (early) | Canadian National | | Demolished? |
| Windsor GTR | 1884 | Grand Trunk | | Closed 1965, demolished? |
| Windsor MCR | 1911 | Michigan Central/Canada Southern | | Destroyed by arson in 1996 |
| Windsor Via | 2012 | Via Rail | | Actively used by Via Rail. |
| Woman River | | | | Actively used by Via Rail. |
| Woodstock | 1885 | Grand Trunk | | Actively used by Via Rail. |
| Wyoming | | | | Actively used by Via Rail. |
