The Bukhtarma (Kazakh: Бұқтырма, romanized: Būqtyrma, 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).^[1] 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).

The Bukhtarma Dam is on the Irtysh a few kilometers downstream from the mouth of Bukhtarma. The lower course of the Bukhtarma has thus become of bay of the reservoir produced by the dam.