The Rauchua (Russian: Раучуа, also: Большая Бараниха Bolshaya Baranikha) is a river in Far East Siberia, Russia.

It passes through the sparsely populated areas of the Siberian tundra and flows northwards into the Kolyma Gulf, East Siberian Sea, not far west from Ayon Island.

The Rauchua and its tributaries belong to the Chukotka Autonomous Okrug administrative region of Russia.

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