Rat River
Rat River may refer to:
Canada
- Rat River (Burntwood River tributary), Manitoba
- Rat River (Red River of the North tributary), Manitoba
- Rivière au Rat (Weedon), a tributary of the Saint-François River in Quebec, Canada
- Rivière aux Rats, a tributary of the Saguenay River in Quebec, Canada
Romania
- Rât (disambiguation), several rivers
Elsewhere
- River Rat, a tributary of the River Gipping, England
- Rat River, Wisconsin, the former name of Silver Cliff, Wisconsin, US