List of rivers of Ontario

This is the list of rivers which are situated in and flow through Ontario. The watershed list includes creeks and other tributaries as well.

List of rivers arranged by watershed

Hudson Bay watershed

Black Duck River
Severn River
- Beaver River
- Fawn River
- Sachigo River
  - Wapaseese River
  - Beaver Stone River
- Blackbear River
- Makoop River
- Windigo River
- Cobham River (source in Manitoba)
- McInness River
Winisk River
- Asheweig River
- Pipestone River
Sutton River
- Aquatuk River
Kinushseo River

Nelson River watershed

via Lake Winnipeg in Manitoba

James Bay watershed

Atlantic Ocean watershed

Lake Superior watershed

Lake Huron/Georgian Bay

In alphabetical order

Ausable River
- Little Ausable River
Bayfield River
Beaver River
- Boyne River
Bighead River
Blind River
Coldwater River
French River
- Wanapitei River
- Pillow River
- Murdock River
- Wolseley River
- Little French River
- Restoule River
- Hall River
- Lake Nipissing watershed
Go Home River
Kagawong River
Magnetawan River
Maitland River
Manitou River
Mindemoya River
Mississagi River
Moon River (Cottage Country)
- Muskoka River
Musquash River
Nine Mile River
Nottawasaga River
- Boyne River
- Mad River
- Pine River
Penetangore River
Pickerel River
Pottawatomi River
Pretty River
St. Marys River
- Garden River
- Bar River
Sauble River
- Rankin River
Saugeen River
Seguin River
Serpent River
Severn River (part of the Trent-Severn Waterway)
- Lake Simcoe watershed
Spanish River
- Agnes River
- Aux Sables River
- Vermilion River
Sydenham River
- Spey River
Teeswater River
Whitefish River

Lake Erie watershed

Detroit River
- Lake St. Clair watershed
  - Little River
  - Puce River
  - Belle River
  - Ruscon River
  - Thames River
    - Avon River
    - Dingman Creek
    - Jeanettes Creek
    - McGregor Creek
    - Medway Creek
    - Pottersburg Creek
    - Stoney Creek
    - Waubuno Creek
  - Sydenham River
  - St. Clair River
Lynn River
Grand River

Lake Ontario watershed

In order of ascent mainly from west to east

Niagara River
- Lyon Creek
- Two Mile Creek
- Tea Creek
Niagara Falls
- Welland River
  - Black Creek (Niagara)
Jordan Harbour watershed
Red Hill Creek (Hamilton)
Burlington Bay watershed
- Sulphur Creek
Bronte Creek
Sixteen Mile Creek (Oakville)
Credit River
Etobicoke Creek
- Heart Lake (Brampton)
- Elmcrest Creek (Toronto)
Mimico Creek
Humber River
- Black Creek (Toronto)
- Emerson Creek
- Jersey Creek
- Rainbow Creek (Woodbridge)
  - Robinson Creek (Toronto)
- West Humber River
- East Humber River
Toronto Harbour
- Garrison Creek
- Russell Creek
- Taddle Creek
- Don River
  - West branch Don River
    - Castle Frank Brook
  - Taylor Creek
  - East Branch Don River
    - Beaver Creek (Toronto)
    - German Mills Creek
    - Deerlick Creek
Highland Creek
Rouge River (Toronto-Pickering)
Petticoat Creek (Pickering)
Duffins Creek
- Miller's Creek
- Ganatsekiagon Creek
Brougham Creek
Pringle Creek
Corbett Creek
Goodman Creek
Robinson Creek
Darlington Creek
West Side Creek
Soper Creek
Wilmont Creek
Foster Creek
Graham Creek
Carruthers Creek
Ganaraska River (Port Hope)
Trent River (part of the Trent-Severn Waterway)
- Crowe River
- Rice Lake watershed
  - Otonabee River
Moira River (Belleville)
- Black River
- Clare River
- Skootamatta River
Salmon River
Napanee River
Cataraqui River (Kingston)
- Rideau Canal system
Gananoque River

Saint Lawrence River watershed

Ottawa River watershed

In order of ascent mainly from west to east

Montreal River
- Lady Evelyn River
Mattawa River
Chalk River
Petawawa River
Muskrat River
- Indian River
Bonnechere River
Madawaska River
- Opeongo River
- York River
  - Little Mississippi River
  - North York River
    - Clyde Creek
- South Madawaska River
  - Galipo River
  - Crossbar River
- North Madawaska River
Mississippi River
Carp River
Rideau River
- Jock River
- Tay River
South Nation River
- Castor River
  - North Castor River
  - Middle Castor River
  - South Castor River
  - East Castor River
- Little Castor River
Rigaud River
- East Rigaud River

Alphabetical list (excluding lakes)

Rivers

A	B	C	D
Agawa River Agnes River Albany River Amable du Fond River Aquatuk River Arrow River Asheweig River Attawapiskat River Ausable River Aux Sables River Avon River	Baldhead River Bar River Barron River Batchawana River Bayfield River Beaver River Beaverton River Berens River Bighead River Black River Black Duck River Black Sturgeon River Blind River Bloodvein River Bonnechere River Boyne River Brunswick River Buck River Burnt River	Cache River Carp River Castor River Cataraqui River Chalk River Chapleau River Cheepash River Clare River Clyde River Coldwater River Conestogo River Credit River Crow River Crowe River Current River	Detroit River Dog River Don River (Toronto)
E	F	G	H
East River Ekwan River English River Eramosa River	Fall River Fawn River Fire River Forks River Frederick House River French River	Ganaraska River Gananoque River Garden River Gargantua River Go Home River Goulais River Grand River Groundhog River Gull River	Harricana River Hay River Holland River Hollow River Humber River Humber River, East Humber River, West
I	J	K	L
Imogene River Ivanhoe River	Julia River	Kagawong River Kagiano River Kaministiquia River Kapiskau River Kapuskasing River Kattawagami River Kenogami River Kinushseo River Kopka River Kwataboahegan River Lady Evelyn River Lakitusaki River Lawagamau River	Layton River Little Ausable River Little River Lynn River
M	N	O	P
Mad River Madawaska River Magnetawan River Magpie River Maitland River Manitou River Maskinonge River Mattagami River Mattawa River Matawitchewan River McIntyre River McKellar River Michipicoten River Mindemoya River Missinaibi River Mission River Mississagi River Mississippi River Moira River Montreal River Moon River (Cottage Country) Moose River Muskoka River Musquash River	Napanee River Nat River Niagara River Nine Mile River Nipigon River Nipissing River Nith River Neebing River Nonquon River Nottawasaga River	Old Woman River Ombabika River Opasatika River Opeongo River Opinnagau River Otonabee River Oxtongue River	Penetangore River Pic River Pickerel River Pigeon River Pine River Pipestone River Pivabiska River Pottawatomi River Pretty River Pukaskwa River
Q	R	S	T
	Rainy River Raisin River Rankin River Rigaud River Remi River Restoule River Rideau River Rouge River	Sachigo River Saint Lawrence River St. Marys River Salmon River Sand River Sauble River Saugeen River Schomberg River Scugog River Seine River Seguin River Serpent River Severn River Shebandowan River Skootamatta River South Nation River Soweska River Spanish River Speed River Spey River Steel River Sturgeon River Sutton River Swallow River Sydenham River	Talbot River Teeswater River Temagami River Thames River (London) Trent River Turtle River
U	V	W	Y
Usiske River	Vermilion River	Whitefish River (NW) Whitefish River (NE) Wabigoon River Wanapitei River Wapesi River Winisk River Winnipeg River Welland River	York River