Turanshah, also Turan Shah (Arabic: توران شاه‎‎), (? – 2 May 1250), (epithet: al-Malik al-Muazzam Ghayath al-Din Turanshah (Arabic: الملك المعظم غياث الدين توران شاه‎‎)) was a Kurdish ruler of Egypt, a son of Sultan As-Salih Ayyub. A member of Ayyubid Dynasty, he became Sultan of Egypt for a brief period in 1249–50.

Turanshah was not trusted by his father, who sent him to Hasankeyf to keep him away from Egyptian politics. He learned of his father's death from Faris ad-Din Aktai, commander of his father's Bahri Mamluks, who had been sent from Egypt to bring him back and pursue the war against Louis IX of France and the Seventh Crusade. Aktai arrived at Hasankeyf early in Ramadan 647/December 1249 and a few days later, 11 Ramadan/18 December, Turanshah and around fifty compansions had started off for Egypt. The party took a circuitous route to avoid being intercepted by hostile Ayyubid rivals and on 28 Ramadan 647/4 January 1250 they arrived at the village of Qusayr, near Damascus, making their ceremonial entry the next day, when Turanshah was officially proclaimed Sultan.

Turanshah remained in Damascus for three weeks, distributing huge sums of money to secure loyalty among the troops and notables of the city. He then set off for Egypt and arrived in Mansura with only a small retinue on 19 Dhu'l Qa'da/23 February. Ignoring his father's written advice to honour and rely on the Bahri Mamluks, he rapidly set about appointing his own (Muazzami) Mamluks to key positions. He also promoted many black slaves to prominence. A black eunuch was made ustadar (master of the royal household) while another became amir jandar (master of the royal guard). Both of these approaches alienated the powerful Bahri Mamluks.

The account given of Turanshah by historians writing during the Mamluk period cannot necessarily be relied on, but according to them, he was unbalanced, of low intelligence and had a nervous twitch. On one occasion he went about chopping the tops off candles, shouting 'this is how I will deal with the Bahri Mamluks!'

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