| Whiting River | |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | States |
| Subdivision Name2: | Massachusetts, Connecticut |
| Subdivision Type4: | Towns |
| Subdivision Name4: | New Marlborough, Massachusetts, North Canaan, Connecticut |
| Length: | 7miles |
| Source1: | Thousand Acre Swamp |
| Source1 Location: | New Marlborough, Massachusetts |
| Source1 Coordinates: | (42.0668°N -73.2112°W) |
| Source1 Elevation: | 1388feet |
| Mouth: | Blackberry River |
| Mouth Location: | North Canaan, Connecticut |
| Mouth Coordinates: | (42.0111°N -73.2739°W) |
| Mouth Elevation: | 748feet |
| River System: | Housatonic |
| Basin Size: | 12464.23acres |
| Tributaries Right: | Ginger Creek |
The Whiting River is a southward-flowing stream located in Massachusetts and the far northwest corner of Connecticut in the United States. The river runs for seven miles from its source at the Thousand Acre Swamp in New Marlborough before emptying into the Blackberry River in North Canaan. The river follows a curving southwesterly course for four miles in Massachusetts, passing over 100-foot-high Campbell Falls at Campbell Falls State Park Reserve, where it is joined by the northwest-flowing Ginger Creek. It flows south for 2.78 miles from the state line north of Canaan Valley to its mouth on the Blackberry River in Connecticut.
The Whiting River drains marshy areas of the southern part of New Marlborough. The river's watershed includes Wolf Swamp, Thousand Acre Swamp, East Indies Pond, and Hay Meadow Pond. Two man-made lakes, Cookson Pond and Windemere Lake, also discharge into the Whiting River in Massachusetts.