The Kumandins (also Kumandy, Kumanda, Qumandy, Qumanda) are an indigenous people of southern Siberia. They reside mainly in the Altai Republic. Their language is related to the Turkic Uigur language of the Karluk branch.

According to the 1926 census, in the territory of Russia lived 6,335 Kumandy. In the 2002 census, the number was only 3,114, but possibly the 1926 census included some related peoples. A part of Kumandy living on the banks of river Biya from river Kuu (Swan, Russ. "Lebed") downstream, almost to the city of Biysk, and also along the lower course of the river Katun by the present time (1969) conflated with the local Russian population..

Kumandy is a branch of the historical Kumans that fled to the Altai mountains and found shelter by joining with the local people as a separate seok. In the 17th century, before migrating to Altai, Kumandy lived along the river Charysh, near its confluence with the river Ob. Their relocation was driven by their unwillingness to pay yasak tribute to the Russian sovereign.N.Aristov linked Kumandy and their clan Chelkandy with the descendants of the ancient Türks (Modern Chinese Pinyin Tujue 突 厥 ), "who in the 6th-8th cc. CE created in the Central Asia a powerful nomadic state, which received in history a name Türkic Kaganate".