Mill River
- Mill (disambiguation)
- Mill Creek (disambiguation)
- Mill River (Connecticut)
- Mill River (Fairfield, Connecticut)
- Mill River (Harrington Bay)
- Mill River (Massachusetts–Rhode Island)
- Mill River (Northampton, Massachusetts)
- Mill River (Otter Creek tributary)
- Mill River (Saint George River tributary)
- Mill River (Springfield, Massachusetts)
- Mill River (Taunton River tributary)
- Mill River East, Prince Edward Island
- Mill River Historic District
- Mill River Union High School
- Mill River, Massachusetts
- Mill River, New Haven
- Mills River
- Rippowam River