Bilge Qaghan (Bilgä Qaγan; ; 683 – 25 November 734) was the fourth Qaghan of the Second Turkic Khaganate. His accomplishments were described in the Orkhon inscriptions.
As was the custom, his personal name and the name after assuming the title Qaghan were different. His personal name was recorded in Chinese characters as 阿史那默棘連 (). His name after assuming the title was Bilgä Qaγan. (Bilgä Qaγan, ).
He was born in 683, in the early years of the khaganate. He campaigned alongside his father from early childhood. He was created as Tardush shad and given command over the western wing of the empire in 697 by Qapaghan. He managed to annihilate Wei Yuanzhong's army in 701 with his brother. He also reconquered Basmyl tribes in 703. He also subdued Yenisei Kyrgyz forces in 709, after their disobedience had to reconquer and kill their Qaghan in 710. He killed Türgesh khagan Suoge at Battle of Bolchu.
In later years of Qapaghan,