| Little Madawaska River | |
| Pushpin Map: | Canada Ontario |
| Pushpin Map Caption: | Location of the mouth of the Little Madawaska River in Ontario |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Ontario |
| Subdivision Name2: | Ontario |
| Subdivision Type3: | Region |
| Subdivision Name3: | Northeastern Ontario |
| Subdivision Type4: | District |
| Subdivision Name4: | Nipissing |
| Subdivision Type5: | Part |
| Subdivision Name5: | Nipissing, Unorganized South |
| Source1: | Lake La Muir |
| Source1 Location: | Freswick Township |
| Source1 Coordinates: | 45.8497°N -78.5492°W |
| Source1 Elevation: | 394m (1,293feet) |
| Mouth: | Petawawa River |
| Mouth Location: | Deacon Township |
| Mouth Coordinates: | 45.9842°N -78.3125°W |
| Mouth Elevation: | 279m (915feet) |
| River System: | Saint Lawrence River drainage basin |
The Little Madawaska River is a river in the Saint Lawrence River drainage basin in the Unorganized South Part of Nipissing District in northeastern Ontario, Canada.[1] The river is entirely within Algonquin Provincial Park, and is a right tributary of the Petawawa River and not a tributary of the nearby Madawaska River.
The river begins at Lake La Muir in the geographic township Freswick Township and flows northeast to Hogan Lake. It continues northeast from the lake controlled by a small dam to Phillip Lake, from which it also continues to flow northeast controlled by a dam. The river then empties into Radiant Lake on the Petawawa River in Deacon Township, near the unincorporated place of Odenback. The Petawawa flows via the Ottawa River to the Saint Lawrence River.
