The Chegitun (Russian: Чегитун) is a river located in the Chukotka Peninsula in Far East Siberia. It is the easternmost river flowing into the Chukchi Sea from the Siberian side, which makes it the easternmost significant river of the Eurasian continent. It is 137 kilometres (85 mi) long, and has a drainage basin of 4,120 square kilometres (1,590 sq mi). The name of the river is based in the Eskimo–Aleut term Sahtuk, meaning 'straightened', which became Чегтун in the Chukchi language.