Qara Yuluk Uthman Beg
| Uthman Beg | |||||
|---|---|---|---|---|---|
| Coinage of  Qara Yülük Uthman Beg. AH 805-839 1403-1435 CE | |||||
| Leader of the Aq Qoyunlu | |||||
| Reign | 1378 – 1435 | ||||
| Predecessor | Fakhr-ud-Din Qutlugh | ||||
| Successor | Ali Beg | ||||
| Born | c. 1356 | ||||
| Died | 1435 (aged 79) | ||||
| Wives | Daughter of Alexios III of Trebizond Niece of Rustam ibn Tarkhan | ||||
| Issue | Ibrahim Bey Abel Bey Jalaladdin Ali Bey Hamza Bey Uveys Bey Hasan Bey Yakub Bey Ruqaya Sultan | ||||
| 
 | |||||
| Dynasty | Aq Qoyunlu | ||||
| Father | Fakhr-ud-Din Qutlugh | ||||
| Mother | Maria Comnene of Trebizond | ||||
Uthman Beg or Osman Beg (Ajami Turkic and Persian: قارا یولوق عثمان بیگ; 1356 – 1435) was a late 14th and early 15th-century leader of the Turkoman tribal federation of Aq Qoyunlu in what is now eastern Turkey, Iran, Azerbaijan and Iraq.