Tarkhan Batirashvili known by his nom de guerre Abu Omar al-Shishani or Omar al-Shishani (11 February 1986 – 10 July 2016, presumably), was a Georgian Chechen (Kist) jihadist who served as a commander for the Islamic State in Syria, and previously as a sergeant in the Georgian Army.
A veteran of the 2008 Russo-Georgian War, Abu Omar al-Shishani became jihadist after being discharged from the Georgian military and served in various command positions with Islamist militant groups fighting in the Syrian Civil War. Al-Shishani was previously the leader of the rebel group Muhajireen Brigade (Emigrants Brigade), and its successor, Jaish al-Muhajireen wal-Ansar (Army of Emigrants and Supporters). In 2013, Al-Shishani joined the Islamic State and rapidly became a senior commander in the organization, directing a series of battles and ultimately earning a seat on ISIL's shura council.
On July 2016, ISIL announced that al-Shishani had died during battle in the town of Al-Shirqat in Iraq in a US airstrike.