Raziyya al-Din (1205 – October 13, 1240) (Urdu: رضیہ سلطانہ, Hindi: रज़िया सुल्ताना), throne name Jalâlat ud-Dîn Raziyâ (Urdu: جلالۃ الدین رضیہ, Hindi: जलालत उद-दीन रज़िया), usually referred to in history as Razia Sultan, was the Sultan of Delhi in India from 1236 to May 1240. She was of Seljuq slave ancestry and like some other Muslim princesses of the time, she was trained to lead armies and administer kingdoms if necessary. Razia Sultana, the fifth Mamluk Sultanate was the only woman ruler of both the Sultanate and the Mughal period.
Razia (also called Radiyya or Raziyya) succeeded her father Shams-ud-din Iltutmish to the Sultanate of Delhi in 1236. Iltutmish became the first sultan to appoint a woman as his successor when he designated his daughter Razia as his heir apparent. (According to one source, Iltumish's eldest son had initially been groomed as his successor, but had died prematurely.) But the Muslim nobility had no intention of acceding to Iltutmish's appointment of a woman as heir, and after the sultan died on April 29, 1236, Razia's brother, Rukn ud din Firuz, was elevated to the throne instead.
Ruknuddin's reign was short.