Muzaffar al-Din Jahan Shah ibn Yusuf (1397 Khoy 1467 Tabriz) (Persian: ???? ????; Azerbaijani: Cahan ?ah) was the leader of the Kara Koyunlu oghuz Turks tribal federation in Azerbaijan and Arran who reigned c.1438-1467. During his reign he managed to expand the Kara Koyunluˇs territory to its largest extent, including Western Anatolia, most of present day Iraq, central Iran, and even eventually Kerman. He also subjugated neighbouring states. He was one of the greatest rulers of the Kara Koyunlu. Upon the death of the Timurid ruler Shah Rukh in 1447, Jahan Shah became an independent ruler of the Kara Koyunlu, and started to use the titles of sultan and khan. From around 1447 Jahan Shah was involved in a struggle against the Ak Koyunlu who had always been sworn enemies of the Kara Koyunlu. On 11 November 1467 at the Battle of Chapakchur, Jahan Shah was killed while trying to flee the Ak Koyunlu forces of Uzun Hassan, and with his death the great era of Kara Koyunlu history came to an end.