Ahmad Shah Qajar was the shah of Iran (Persia) from 16 July 1909 to 15 December 1925, and the last ruling member of the Qajar dynasty.
Ahmad Shah was born in Tabriz on 21 January 1898 and ascended the throne at the age of 12 after the removal of his father Mohammad Ali Shah by the Parliament on 16 July 1909. Due to his young age, his uncle, Ali-Reza Khan, took charge of state affairs as Regent. Upon reaching the age of majority, Ahmad Shah was formally crowned on 21 July 1914.