The Kazym (Russian: Казы́м) is a river in Beloyarsky District, Khanty-Mansi Autonomous Okrug, Russia. It is 659 kilometres (409 mi) long, with a drainage basin of 35,600 square kilometres (13,700 mi2). Its average discharge is 267 cubic metres per second (9,400 cu ft/s). The town of Beloyarsky is along the Kazym.
