| Blackberry River | |
| Name Other: | (Alternately, Blackburn River, Blackbury River, and other names) |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Connecticut |
| Subdivision Type3: | County |
| Subdivision Name3: | Litchfield |
| Subdivision Type4: | Towns |
| Subdivision Name4: | Norfolk, North Canaan |
| Length: | 9.64miles |
| Source1: | Confluence of Wood Creek and Spaulding Brook |
| Source1 Location: | Norfolk |
| Source1 Coordinates: | (41.994°N -73.2029°W) |
| Source1 Elevation: | 1130feet |
| Mouth: | Housatonic River |
| Mouth Location: | North Canaan |
| Mouth Coordinates: | (42.0329°N -73.3473°W) |
| Mouth Elevation: | 643feet |
| River System: | Housatonic |
| Basin Size: | 17341.03acres |
| Tributaries Left: | Whiting River |
| Tributaries Right: | Dunning Brook, Roaring Brook |
The Blackberry River is a westward-flowing river located entirely in the far northwest corner of the U.S. state of Connecticut. The river runs for 9miles through the towns of Norfolk and North Canaan, where it empties into the Housatonic River. The river provided waterpower for industrial purposes from the early 1700s through the first part of the 20th century.
The river's watershed covers approximately in the Connecticut towns of Canaan, North Canaan and Norfolk, as well as a portion of New Marlborough, Massachusetts.
The river passes the historic Moseley House-Farm, a colonial mansion dating from 1763 in Norfolk, and the Beckley Furnace Industrial Monument in North Canaan.