Mawsillu (lit. 'from Mosul';[1] Azerbaijani: Mosullu; Turkish: Musullu) was one of the most active Turkic tribes that operated during the Aq Qoyunlu and Safavid empires. During the Safavid Empire, it was one of the Turkmen tribes that formed the Qizilbash tribes. The Mosul tribe, more commonly referred to as Turkmen in the Safavid Empire, originated from the region of Mosul.[1]