| Canaan River | |
| Pushpin Map Caption: | Location of the mouth in New Brunswick |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | New Brunswick |
| Subdivision Type3: | Region |
| Subdivision Name3: | Southern New Brunswick |
| Source1: | Saint John River |
| Mouth: | Saint John River on Bay of Fundy |
| River System: | Bay of Fundy drainage basin |
| Tributaries Left: | Grand Lake |
The Canaan River is located in the southeastern portion of New Brunswick. The river drains into Washademoak Lake, in turn draining into the Saint John River. The watershed is composed of 17 tributaries. The total watershed area is .