| Zhangxin Qaghan | |
| Reign: | 833-839 |
| Predecessor: | Zhaoli Qaghan |
| Successor: | Qasar Qaghan |
| Royal House: | Ädiz clan Birth Yaglakar clan Official |
| Father: | Chongde Qaghan |
| Death Date: | 839 |
| Succession: | Khagan of Uyghurs |
| Regnal Name: | Ay Tengride Qut Bolmish Alp Külüg Bilge Qaghan (:::::::|label=none) Blessed at Moon God, Courageous, Glorious, Wise Qaghan |
| Birth Name: | Yaoluoge Hu (藥羅葛胡) |
Zhangxin Qaghan or Alp Külüg Bilge Qaghan was the eleventh ruler of Uyghurs. His personal name was Yaoluoge Hu (藥羅葛胡). He succeeded his uncle in 833.[1]
Chinese records state that he sent an embassy led by Princess Taihe to Tang, accompanied with seven women horse-archers and two Shatuo captives on 16 June 835.[2]
His peace policy with China proved him an unpopular ruler.[3] This led to a rebellion in 839 by the Sogdian official An Yunhe (安允合) and Uyghur minister Chai Lei (柴勒). Qaghan was able to defeat and kill them, but a subsequent battle against another Uyghur official, general Jueluowu (掘羅勿) along with the Shatuo chief Zhuye Chixin was lost. Zhangxin died by suicide following the battle.[4] He was succeeded by Qasar Qaghan.