Vayenga or Vaenga (Russian: Ваенга) is a river in Murmansk Oblast, Russia. Of length 25 km, it flows into the Vayenga Bay (Russian: Губа Ваенга) of the Kola Bay, Barents Sea.
The town of Severomorsk (formerly Vayenga) is located by the Vayenga Bay.
Coordinates: 69°04′58″N 33°28′07″E / 69.0828°N 33.4686°E