Kurdak-Sargat Tatars are a sub-group of Siberian Tatars. They are settled in Omsk Oblast, mainly in the Ust-Ishimsky and Tevrizsky district, and in Tyumen Oblast, in the eastern part of Vagaysky district. Their historical administrative center was the town of Qyzyl-Tura.
They speak Tevriz, a variant of the Tobol-Irtysh dialect of the Siberian Tatar language.
Kurdak-Sargat Tatars are descended from the earliest Turkic settlers in the area, southern Khanty, as well as Noghay and Tobol Tatar elements (the latter date from 1580's). One characteristic is a lack of intermixing with Bukharans. If intermixing with Bukharans was present, it was with earlier Uzbeks. Kurdak Tatars have a Kipchak layer in their ethnogenesis, as is withnessed with the ethnonym Qaraqipchaq.
Sargat-Utuz Tatars are descended of the Khitans, an originally Mongolic group that later became Turkicized. They are also the descendants of the âÂÂOtuz Tatarsâ of the Orkhon Inscriptions.
Immigrant Volga-Ural Tatars settled among the Kurdak-Sargat Tatars in the later periods, in the late 19th and early 20th centuries.
They are divided into two local sub-groups: