| Zia al-Din Ali علاء الدین دراست | |
| Succession: | Sultan of the Ghurid Empire |
| Reign: | 1214-1215 |
| Predecessor: | Ala al-Din Atsiz |
| Successor: | Khwarazmian conquest |
| Royal House: | Ghurid |
| Father: | Shuja al-Din Muhammad |
| Mother: | Malek-ye Hajji |
| Birth Place: | Ghor |
| Death Date: | 13th-century |
| Death Place: | Khwarazm |
| Religion: | Sunni Islam |
Ala al-Din Ali ibn Shuja al-Din Mohammad (Persian: علاء الدین دراست), also known as Zia' al-Din Ali (ضیاء الدین), was the last Sultan of the Ghurid dynasty from 1214 to 1215. He was the cousin and successor of Ala al-Din Atsiz.
Zia al-Din Ali was the son Shuja al-Din Muhammad and a princess known as Malek-ye Hajji. During his early years, Zia al-Din Ali was appointed as governor of Khorasan in ca. 1199/1200 by his cousin Ghiyath al-Din Muhammad. Ghiyath later died in 1202, and was succeeded by his brother Mu'izz al-Din Muhammad, who shortly appointed Ala al-Din Ali as the governor of Ghur, Gharchistan and Zamindawar. Ala al-Din Ali later lead a campaign against the Ismailis in Quhistan.
After the death of Mu'izz al-Din Muhammad in 1206, Ala al-Din Ali was dismissed by the new Sultan Ghiyath al-Din Mahmud, who had him imprisoned in a fortress in Gharchistan. Ala al-Din Ali, however, was later freed by the ghulam Taj al-Din Yildiz, who crowned him as the Sultan of the Ghurid dynasty. After a year Taj al-Din Yildiz was forced to surrender Firozkoh to the Khwarazmian dynasty, and Ala al-Din Ali was captured by a Khwarazmian army and was brought to Khwarazm, where he lived in an honorable exile in Khwarazm. Ala al-Din Ali died a few years later.