The Raritan River Greenway is a proposed protected corridor in Somerset County, New Jersey, planned along the Raritan River to link Branchburg Township with the East Coast Greenway and the Delaware and Raritan Canal trail in South Bound Brook. Identified by the county as a priority park, its longest completed section extends about three miles from Bridgewater to Raritan, combining undeveloped land, park trail, canal-side path, and riverfront footpath. The route includes multiple access points and crossings, with views over the river and passage through Duke Island Park. Additional eastern and western extensions have been envisioned to expand the greenway's regional connections.