Musa ibn Bugha al-Kabir (died 877 CE) is an Abbasid military leader of Turkic origin.
Musa is the son of Bugha al-Kabir, one of the leading Turkish generals under Caliph al-Mu'tasim (r. 833–842).
He may have participated in or at least organized the assassination of Caliph al-Mutawakkil in 861.
Upon Bugha's death in 862, Musa succeeds his father on his offices, and plays an important role in the troubles of the "Anarchy at Samarra".
Finally, he emerges victorious, and through his close association with the vizier and regent Abu Ahmad al-Muwaffaq, he becomes the most powerful general of the Abbasid Caliphate from 870 until his own death in 877.
His sons Ahmad, Muhammad and al-Fadl likewise become senior military figures of the Caliphate, especially against the Zanj Rebellion.