Uyghur or Uighur is a Turkic language written in a Uyghur Perso-Arabic script with 8–13 million speakers, spoken primarily by the Uyghur people in the Xinjiang Uyghur Autonomous Region of Western China. Apart from Xinjiang, significant communities of Uyghur speakers are also located in Kazakhstan, Pakistan, Kyrgyzstan, and Uzbekistan, and various other countries have Uyghur-speaking expatriate communities. Uyghur is an official language of the Xinjiang Uyghur Autonomous Region; it is widely used in both social and official spheres, as well as in print, television, and radio. Other ethnic minorities in Xinjiang also use Uyghur as a common language.

The Turkic languages are a language family of more than 35 documented languages, spoken by the Turkic peoples of Eurasia from Eastern Europe and Southern Europe to Central Asia, East Asia, North Asia (Siberia), and West Asia. The Turkic languages originated in a region of East Asia spanning from Mongolia to Northwest China, where Proto-Turkic is thought to have been spoken, from where they expanded to Central Asia and farther west during the first millennium. They are characterized as a dialect continuum.