Khitan language
Spoken language
Khitan or Kitan, also known as Liao, is an extinct language once spoken in Northeast Asia by the Khitan people. It was the official language of the Liao Empire and the Qara Khitai. Wikipedia
Language family: Altaic languages
Extinct: c. 1243 (Yelü Chucai, last person known who could speak and write Khitan)
Writing system: Khitan large script and Khitan small script