| Qizil Arslan قزل ارسلان | |
|---|---|
| al-Malik al-Mu'azzam | |
 Miniature of Qizil Arslan welcoming the Persian poet Nizami Ganjavi. | |
| Atabeg of the Eldiguzids | |
| Reign | 1186–1191 |
| Predecessor | Muhammad Jahan Pahlavan |
| Successor | Nusrat al-Din Abu Bakr |
| Died | August or September, 1191 |
| Spouse | Inanj Khatun |
| Father | Eldiguz |
| Religion | Sunni Islam |
Muzaffar al-Din Qizil Arslan Uthman (Persian: مظفر الدین قزل ارسلان عثمان), better known as Qizil Arslan[a] (قزل ارسلان), was the ruler (atabeg) of the Eldiguzids from 1186 to 1191. He was the brother and successor of Muhammad Jahan Pahlavan, and was later succeeded by his nephew Nusrat al-Din Abu Bakr.