Brown River may refer to:
- Canada
- Brown River (Québec-Maine), in Saint-Adalbert, L'Islet Regional County Municipality, Chaudière-Appalaches, Quebec
- Brown River (Gatineau River), in municipality of Kazabazua, La Vallée-de-la-Gatineau Regional County Municipality, administrative region of Outaouais, Quebec
- Peter-Brown River, in municipality of Landrienne, Quebec, MRC of Abitibi, administrative region of Abitibi-Temiscamingue, Quebec
- New Zealand
- Papua New Guinea