Mirza Muhammad Haidar Dughlat Beg (Persian: میرزا محمد حیدر دولت بیگ; c. 1499/1500 – 1551) was a Chagatai Turco-Mongol military general, governor of Kashmir, and a historian.

[2] Mirza Haidar Dughlat Beg in the Tarikh-i Rashidi constantly alludes to a distinct tribe or community of Moghuls in Mughalistan, however reduced in numbers, who had preserved Mongol customs, and from the incidental references to Mongolian phrases and terms, likely retained elements of the original Mongolian language, despite the growth of Islam and the growing use of the Turki language, the latter which Haider naturally spoke.

[6] However, he did not stay long in Kashmir, leaving after making a treaty with the local sultan and striking coins in the name of Said Khan.

In 1546, after Humayun recovered Kabul, Haidar removed Nazuk Shah and struck coins in the name of the Mughal emperor.

Mirza Muhammad Haidar Dughlat Beg governed Kashmir from 1540 to 1551,[10] when he was killed in battle.