Qamar-ud-din Khan Dughlat Muslim (Chagatai and Persian: قمر الدین خان دغلت) was a Moghul ruler of Moghulistan between 1368 and 1392.

Qamar-ud-din proclaimed himself khan, the only Dughlat ever to do so and although he did not gain the support of many of the amirs,[1] managed to maintain his position in Moghulistan.

Khudaidad had a very good knowledge about Genghis Khan's Yasa(law), which was an example of the Dughlats' continued respect for the Mongolian tradition.

[4] According to the Tarikh-i Rashidi, Khudaidad had been an early supporter of Khizr Khoja and had hid him from Qamar-ud-din during the latter's purge of members of the house of Chagatai.

[5] He also divided Aksu, Khotan, and Kashgar and Yarkand amongst his family members;[6] this division of territory lasted until the time of Mirza Abu Bakr Dughlat.