The Siberian Turkic or Northeastern Common Turkic languages are a sub-branch of the Turkic language family. The following table is based upon the classification scheme presented by Lars Johanson (1998).Lars Johanson (1998) "The History of Turkic". In Lars Johanson & Éva Ágnes Csató (eds) The Turkic Languages. London, New York: Routledge, 81–125. Classification of Turkic languages at Turkiclanguages.com All languages of the branch combined have approximately 670,000 native and second language speakers, with most widely spoken members being Yakut ( 450,000 speakers), Tuvan ( 130,000 speakers), Northern Altai ( 57,000 speakers) and Khakas ( 29,000 speakers). Despite their usual English name, two major Turkic languages spoken in Siberia, Siberian Tatar and Southern Altai, are not classified as Siberian Turkic, but are rather part of the Kipchak subgroup. Many of these languages have a Yeniseian substratum.
Classification Proto-Turkic Common Turkic Northeastern Common Turkic (Siberian) North Siberian Sakha (Yakut) Dolgan South Siberian Sayan Turkic Tuvan Tofa Soyot-Tsaatan Tuha Dukhan Yenisei Turkic Khakas Northern Altai Chelkan (Chalkan, Chalqandu) Kumandin Tubalar Shor (Saghay Qaca, Qizil) Western Yugur (Western Uyghur, Yellow Uyghur)Deviating. Probably of South Siberian origin (Johanson 1998)Coene 2009, p. 75Coene 2009, p. 75 Chulym Turkic Chulym ( Lower and Middle) Old Turkic Orkhon Turkic Old Uyghur
Alexander Vovin (2017) notes that Tofa and other Siberian Turkic languages, especially Sayan Turkic, have Yeniseian loanwords.Vovin, Alexander. 2017. "Some Tofalar Etymologies." In Essays in the history of languages and linguistics: dedicated to Marek Stachowski on the occasion of his 60th birthday. Krakow: Księgarnia Akademicka.
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