| Borden River | |
| Pushpin Map: | Canada Ontario |
| Pushpin Map Caption: | Location of the mouth of the Borden River in Ontario |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Ontario |
| Subdivision Type3: | Region |
| Subdivision Name3: | Northeastern Ontario |
| Subdivision Type4: | District |
| Subdivision Name4: | Sudbury |
| Source1: | Borden Lake |
| Source1 Location: | Cochrane Township |
| Source1 Coordinates: | 47.8736°N -83.2803°W |
| Source1 Elevation: | 428m (1,404feet) |
| Mouth: | Nemegosenda Lake on the Nemegosenda River |
| Mouth Location: | Chewett Township |
| Mouth Coordinates: | 47.9647°N -83.1039°W |
| Mouth Elevation: | 333m (1,093feet) |
| River System: | James Bay drainage basin |
The Borden River is a river in Sudbury District in northeastern Ontario, Canada.[1] It is in the James Bay drainage basin, and is a left tributary of the Nemegosenda River.
The river begins at the northwest bay of Borden Lake in geographic Cochrane Township,[2] and flows north under Ontario Highway 101. It heads northeast, then east, enters geographic Borden Township,[3] and takes in the left tributary Briggs Creek. The heads southeast, takes in the right tributary Westover Creek, then flows northeast through the Mate Lakes where it enters geographic McGee Township.[4] It briefly flows northeast through the southeast corner of the township, continues northeast into geographic Chewett Township,[5] then turns northwest and reaches its mouth at the southern tip of Nemegosenda Lake. Nemegosenda Lake flows via the Nemegosenda River, the Kapuskasing River, the Mattagami River and the Moose River to James Bay.