with which it shares the eastern subbranch of Oghuz languages, as well as Khorazm, the Oghuz dialect of Uzbek spoken mainly in Khorezm along the Turkmenistan border. Elsewhere in Iran, the Turkmen language comes second after the Azerbaijani language in terms of the number of speakers of Turkic languages of Iran.

The standardized form of Turkmen (spoken in Turkmenistan) is based on the Teke