Tarkhan Tayumurazovich Batirashvili (; 11 February 1986 – presumedly dead in July 2016), known by his nom de guerre Abu Omar al-Shishani (, "Abū ‘Umar ash-Shīshānī" , "Abu Omar the Chechen") or Omar al-Shishani, was a Georgian Kist jihadist. He served as a commander for the Islamic State in Syria, and previously as a sergeant in the Georgian Army. In 2013, Batirashvili joined the Islamic State and rapidly became a senior commander in the organization, directing a series of battles and ultimately earning a seat on ISIS's shura council.