Sultan Ahmad Khan b. Sardar 'Azim Muhammadzai[1] (Persian: سلطان احمد خان بن سردار عظیم محمدزی), also known as Sultan Jan[2] (Persian: سلطان جان) was the ruler of the Principality of Herat from September 1857 to April 1863.
[3] If the Iranians would support Sultan Ahmad Khan with an army, he would overthrow the Amir-i Kabir and incorporate Afghanistan into the Guarded Domains.
[4] During Sultan Ahmad Khan's reign, he was completely dependent on Iran and not only minted coins in the Shah's name, but also given assistance against the Muhammadzais to the east.
[1] Naser al-Din Shah bestowed the title of Sirkar (Persian: سرکار) on Sultan Ahmad Khan and gave his son, Shah Nawaz Khan, the title of Amir Panji (Persian: امیر پنجی).
[4] During the 10-month siege Ahmad died on March 6, 1863,[1][8] being succeeded by his son Shah Nawaz Khan.