Tengri Qaghan should not be confused with Khan of Heaven.
| Tengri Khagan 登利可汗 | |
| Reign: | 739-741 |
| Succession: | Qaghan of the Second Turkic Khaganate |
| Successor: | Kutluk Yabgu Khagan (Usurper) Ashina Shi (Basmyl chief) Özmiş Khagan (son of Pan Kul Tigin) |
| Issue: | Princess Yuzhu (餘燭公主) [1] |
| Royal House: | Ashina |
| Father: | Bilge Qaghan |
| Mother: | Po Beg |
| Death Date: | 741 |
| Birth Name: | Ashina Kutluk 阿史那骨咄 |
| Predecessor: | Yollıg Khagan |
| Regent: | Po Beg |
| Religion: | Tengrism |
Tengri Qaghan (Old Turkic: :) (734 or 739 or 740 – 741) was the sixth ruler of the Second Turkic Khaganate.
He was the second son of the fourth ruler, Bilge Khagan, and was preceded by his elder brother Yollig Khagan. Tengri was a minor and dominated by his mother Po Beg.
In 740, Xuanzong sent his envoy Li Zhi (李質) who declared him Tengri Khagan.[2] His mother El Bilge Khatun and chancellor Yusi Tarkhan (飫斯達幹)[3] conspired together to centralize the state and kill the cousins who were ruling as governors in the west and the east. While they succeeded in killing the western shad, the eastern shad Pan Kul Tigin rebelled and marched on the capital. He captured Tengri and executed him, causing his mother and regent El Bilge Khatun to flee.
Pan Kul Tigin crowned another brother of Tengri in 741 and himself as regent. However, he was soon defeated by rebelling Basmyl chief Ashina Shi (阿史那施), another rebel who was his nephew.