Āghā Moḥammad Khān Qājār (1742–1797; )‎ was the founder of the Qajar dynasty of Iran, ruling from 1789 to 1797 as king (shah). He was originally chieftain of the Qoyunlu branch of the Qajar tribe. In 1789, Agha Mohammad Khan was enthroned as the king of Iran, but was not officially crowned as its king until March 1796. On 17 June 1797 Agha Mohammad Khan was assassinated, and was succeeded by his nephew, Fath-Ali Shah Qajar.