Tongue River (North Dakota)
General data
- Name: Tongue River (North Dakota)
- Water system: Lake Winnipeg
- Water type: River
- Progression: Pembina River (Manitoba – North Dakota) -> Red River of the North -> Lake Winnipeg -> Nelson River -> Hudson Bay -> Arctic ocean -> Planet Earth
- Climates: Temperate
- Continents: North America
- Countries: United States of America
The Tongue River is a 90.4-mile-long (145.5 km) tributary of the Pembina River in northeastern North Dakota in the United States. It drains an area of the prairie country near the Canada–US border in the extreme northeast corner of the state in the watershed of the Red River.