Mill River

Mill River may refer to:

Rivers in the United States

 * Mill River (Connecticut), in New Haven County
 * Mill River (Fairfield, Connecticut)
 * Mill River, in Stamford, Connecticut, part of the Rippowam River
 * Mill River (Harrington Bay), in Washington County, Maine
 * Mill River (Saint George River tributary), in Thomaston, Maine
 * Mill River (Massachusetts–Rhode Island)
 * Mill River (Northampton, Massachusetts)
 * Mill River (Springfield, Massachusetts)
 * Mill River (Taunton River tributary), in Taunton, Massachusetts
 * Mill River (Otter Creek tributary), in Rutland County, Vermont

Other uses

 * Mill River, New Haven, Connecticut, U.S.
 * Mill River, Massachusetts, U.S.
 * Mill River Historic District
 * Mill River East, Prince Edward Island, Canada
 * Mill River Union High School, in Clarendon, Vermont, U.S.