Sagavanirktok River
General data
- Name: Sagavanirktok River
- Water system: Arctic ocean
- Water type: River
- Progression: Beaufort sea -> Arctic ocean -> Planet Earth
- Climates: Subpolar
- Continents: North America
- Countries: United States of America
The Sagavanirktok River or Sag River (Iñupiaq: Saġvaaniqtuuq) is a stream in the North Slope Borough of the U.S. state of Alaska.
It is about 180 miles (290 km) long and originates on the north slope of the Brooks Range, flowing north to the Beaufort Sea near Prudhoe Bay.