The Kazyr (Russian: Казыр) is a river in the Irkutsk Oblast and Krasnoyarsk Krai of Russia. At its confluence with the Amyl, the Tuba (a right tributary of the Yenisey) is formed. Its name translates from the Tuvan language as "savage". The river is 388 kilometres (241 mi) long and drains an area of 20,900 square kilometres (8,100 sq mi). It is covered by ice from late October to late April. The Kizir is a major tributary.