Abū ʿAmr Khalīfa ibn Khayyāṭ al-Laythī al-ʿUṣfurī (Arabic: خليفة بن خياط) (born : 160/161 AH/777 AD– died 239/240 AH/854 AD) was an Arab historian. His family were natives of Basra in Iraq. His grandfather was a noted muhaddith or traditionalist, and Khalifa became renowned for this also. Among the great Islamic scholars who were his pupils were Bukhari and Ahmad ibn Hanbal.