See also: Shan (homonymy)

The Tian Shan ( sinogrammes simplified : 天山, Hanyu pinyin : tiānshān ; literally : celestial mountains ), sometimes also called Tangri Tagh ( mountains of the spirits in language Ouïghour E) is a chain of high mountains of Central Asia located at the north and the west of the Désert of Taklamakan. It begins in the east at the border between the Kazakhstan, the Kyrgyzstan and the Chinese province of the Xinjiang and finishes in the west by joining the Pamir.

At Kirghizstan, the chain of Tian Shan is located at the south-east of the inland sea which form the salted lake of Yssik Koul.

More the high summits of Tian Shan are the Pic Pobedy (: 7439 m), and the peak Khan-Tengri (: 6995 m).

The city-oases of the route of the Silk route which circumvented by north the Désert of Taklamakan are below located Tian Shan.