Abul-Qasim Babur Mirza bin Baysonqor Beg (Chagatai/Persian: ابوالقاسم بابر میرزا بن بایسنقر بیگ‎), was a Timurid ruler in Khurasan (1449–1457). He was the son of Ghiyath-ud-din Baysonqor ibn Shahrukh Mirza, and thus a great-grandson of Amir Timur.