The Kacha (Russian: Ка́ча) is a river in Krasnoyarsk Krai, Russia. It is a right tributary of the Yenisey. The Turkic name of the river is Izyr-Su, and it has been suggested that the Russian name is derived from Izyr-Kichi Izyr people, the self-name of the Turkic people that inhabited the river valley and adjacent lands.
The length of the Kacha is 102 kilometers; the area of its drainage basin is 1,280 square kilometers.
