| Ruknuddin Firuz | |
|---|---|
| 'Sultan' | |
.jpg) Bull & Horseman type jital coin of Ruknuddin Firuz | |
| 4th Sultan of Delhi | |
| Reign | 30 April 1236 – 19 November 1236 |
| Predecessor | Iltutmish |
| Successor | Razia Sultana |
| Born | about 1211 |
| Died | 19 November 1236 (aged 25-24) Delhi Sultanate |
| Burial | |
| Issue | Ala ud din Masud |
| Dynasty | Mamluk |
| Father | Iltutmish |
| Mother | Shah Turkan |
| Religion | Islam |
Rukn-ud-din Firuz (Persian: رکنالدین فیروز), also transliterated as Rukn al-Din Firoz (1211 – 19 November 1236), was a ruler of Delhi sultanate for less than seven months in 1236. As a prince, he had administered the Badaun and Lahore provinces of the Sultanate. He ascended the throne after the death of his father Iltutmish, a powerful Mamluk ruler who had established the Sultanate as the most powerful kingdom in northern India. However, he pursued pleasure, wine, women, and left his mother Shah Turkan in control of the administration. The misadministration led to rebellions against Ruknuddin and his mother, both of whom were arrested and imprisoned. The nobles and the army subsequently appointed his half-sister Razia on the throne.