The Cocasset Brook Greenbelt is a natural area in Foxborough that protects the water quality and wildlife habitat of the Cocasset River. The greenbelt consists of over 200 acres of forest, wetland, and open space, and offers opportunities for hiking, biking, fishing, and birdwatching. The greenbelt is managed by the Foxborough Conservation Commission and is open to the public year-round. The greenbelt is part of a larger network of conservation lands that connect the F. Gilbert Hills State Forest to the Neponset River watershed.

Cocasset Brook Greenbelt is a recreation area west of Foxborough and is situated east of Lakeview Pond.

The AllTrails website has a description and map of a hike at  Cocasset Brook Greenbelt.