Kitoy River (Russian: Китой, Buryat: Хути) is a river in Buryatia and Irkutsk Oblast in Russia, Angara River's left tributary. The length of the river is 316 km. The area of its basin is 9,190 km². The Kitoy freezes up in the second half of October and stays icebound until late April - early May. The city of Angarsk is located on the Kitoy River.
Coordinates: 52°39′14″N 103°53′56″E / 52.6539°N 103.8990°E