Radhiyah bint Iltutmish or popularly known as RAZIA Sultana (Persian: رَضِيَه سُلْطَان), known in Arabic: رَضِيَة بِنْت إِلْتُتْمِش‎; c. 1205 – 14 October 1240) was the empress regnant of the Delhi Sultanate from 10 October 1236 to 14 October 1240. A member of the Mamluk dynasty, she is known for being one of the few women in history to have ruled a large empireand the first sovereign FEMALE ruler in both Islamic and Indian history.

An efficient ruler, according to Persian historian Minhaj-i-Siraj, she was sagacious, just, beneficent, the patron of the learned, a dispenser of justice, the cherisher of her subjects, and of warlike talent, and endowed with all the ADMIRABLE ATTRIBUTES and qualifications necessary for a monarch. She is also famous for her romantic involvement and legends with her lover and later husband, Malik Ikhtiar-ud-din Altunia, a ruler of BENGAL and Bhatinda.

At the zenith of Razia's power, her empire included large parts of today's modern Pakistan, India and Bangladesh