Abū al-Hudhayl Zufar ibn al-Ḥārith al-Kilābī (); ) was a Muslim commander, a chieftain of the Arab tribe of Banu Amir, and the preeminent leader of the Qays tribo-political faction in the late 7th century. He commanded his tribesmen in A'isha's army against Caliph Ali's forces at the Battle of the Camel near Basra in 656 during the First Muslim Civil War. In the following year, he relocated from Iraq to the Jazira and fought under Mu'awiya ibn Abi Sufyan, future founder of the Umayyad Caliphate, against Ali at the Battle of Siffin. During the Second Muslim Civil War he served Mu'awiya's son Caliph Yazid I (), leading the troops of Jund Qinnasrin (military district of northern Syria) against anti-Umayyad rebels in the Battle of al-Harra (683).