The Bukhtarma (Kazakh: Бұқтырма, romanized: Buqtyrma, بۇقتىرما, pronounced [bʊqtəɾˈmɑ]; Russian: Бухтарма, romanized: Bukhtarma) is a river of Kazakhstan. It flows through East Kazakhstan Region, and is a right tributary of the Irtysh. The river is 336 kilometres (209 mi) long, with a basin area of 12,660 square kilometres (4,890 sq mi). The source of the river is in the Southern Altai Mountains. The average water flow rate is 214 cubic metres per second (7,600 cu ft/s).