Carmans River
General data
- Name: Carmans River
- Water system: Atlantic Ocean
- Water type: River
- Progression: Great South Bay (Long Island) -> Atlantic Ocean -> Planet Earth
- Climates: Temperate
- Continents: North America
- Countries: United States of America
The Carmans River is a 10-mile (16 km) long river in Brookhaven, New York in Suffolk County on Long Island.