Al-Ashraf Musa (1229–1263), fully Al-Ashraf Musa ibn al-Mansur Ibrahim , was the last Ayyubid prince (emir) of Homs, a city located in the central region of modern-day Syria. His rule began in June 1246, but was temporarily cut short in 1248 after he was forced to surrender Homs and then given Tall Bashir by his cousin an-Nasir Yusuf, the Emir of Aleppo. For a short period of time during Mongol rule in 1260, al-Ashraf served as Viceroy of Syria, although the position was largely nominal. He helped achieve the Mongols' defeat at the hands of the Egypt-based Mamluks by withdrawing his troops from the Mongol coalition during the Battle of Ain Jalut as part of a secret agreement with the Mamluk sultan Qutuz. Following the Mamluk victory, al-Ashraf was reinstated as Emir of Homs as a Mamluk vassal, but was stripped of his viceroy position. Since he left no heirs, after his death, Homs was incorporated into the Mamluk Sultanate.