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| Ulugh Muhammad | |
|---|---|
 Ulugh Muhammad arrives at Murom with an army, miniature from the Illustrated Chronicle of Ivan the Terrible | |
| Khan of the Golden Horde | |
| 1st reign | 1419 – 1423 |
| Predecessor | Hajji Muhammad Khan ibn Oghlan Ali |
| Successor | Barak Khan |
| 2nd reign | 1428 – 1437 |
| Predecessor | Barak Khan |
| Successor | Sayid Ahmad I |
| Khan of Kazan | |
| Reign | 1438 – 1445 |
| Predecessor | Monarchy established |
| Successor | Mäxmüd of Kazan |
| Born | 1405 |
| Died | 1445 Kazan |
| Dynasty | Borjigin |
| Father | Ichkile Hassan |
| Religion | Sunni Islam |
Ulugh Muhammad or Muhammad Khan (1405–1445; Chagatai, Volga Türki, and Persian: الغ محمد; Kypchak: محمد خان; written as Ulanus by orientalists) was a medieval Tatar statesman, Gengisid, Khan of the Golden Horde (before 1436), ruler of Crimea (1437), and the founder of the Khanate of Kazan, which he ruled from 1438–1445. He was the son of the oglan Ichkile Hassan and the cousin of Tokhtamysh. He received the nickname "Ulugh", meaning older or large, in contrast to Küchük Muhammad, meaning younger or small.
Ulugh Muhammad was Khan of the Golden Horde in 1419–1423, 1426, and 1428. In 1428–1432 he waged a stubborn struggle for possession of the Ulug Ulus with the representatives of a minor branch of the Tukaytimurids (one of the branches of the Gengisids). After being defeated, Ulugh Muhammad escaped to Volga Bulgaria vilayet in 1423. With the support of Vytautas, Ulugh Muhammad was able to regain the throne of the Golden Horde in 1426. He succeeded in spreading the power of the Horde to Crimea and established friendly relations with the Ottoman Sultan Murad II. Ulugh Muhammad sent an embassy to Egypt in 1428–1429. In 1431 the son and grandson of the ruler of Moscow, Dmitriy Donskoy came to the court to Ulugh Muhammad in order to reach a decision about princely succession. Ulugh Muhammad ruled in favour of the grandson, Vasiliy II .