| Cedar River | |
| Pushpin Map: | Canada Ontario |
| Pushpin Map Caption: | Location of the mouth of the Cedar River in Ontario |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Ontario |
| Subdivision Name2: | Ontario |
| Subdivision Type3: | Region |
| Subdivision Name3: | Northwestern Ontario |
| Subdivision Type4: | District |
| Subdivision Name4: | Kenora |
| Subdivision Type5: | Part |
| Subdivision Name5: | Kenora, Unorganized |
| Source1: | Cedar Lake |
| Source1 Coordinates: | 50.2186°N -93.1292°W |
| Source1 Elevation: | 357m (1,171feet) |
| Mouth: | English River |
| Mouth Coordinates: | 50.5869°N -93.3817°W |
| Mouth Elevation: | 348m (1,142feet) |
| River System: | Hudson Bay drainage basin |
| Tributaries Left: | Anishinabi River |
| Tributaries Right: | Ord River |
The Cedar River is a river in the Hudson Bay drainage basin in the Unorganized Part of Kenora District in northwestern Ontario in Canada.[1] The river is a left tributary of the English River.[2]
The river begins at the outflow from Cedar Lake and flows north to through Church Lake to Perrault Lake where it takes in the right tributary Ord River. It flows out at the north end of the lake under Ontario Highway 105 and over the Perrault Falls at the unincorporated place of Perrault Falls, passes through Wabaskang Lake, takes in the left tributary Anishinabi River and reaches its mouth at the English River, just south of where Ontario Highway 804 crosses that river and about 6km (04miles) upstream of the Ontario Power Generation Manitou Falls Generating Station. The Cedar River flows via the Winnipeg River and the Nelson River to Hudson Bay.