The Battle of Sheikh Sa'ad (Turkish: Sağ Sahil) occurred between 6–8 January 1916 during the Mesopotamian Campaign of the First World War. The battle took place along the banks of the Tigris River between the Anglo-Indian Tigris Corps and elements of the Ottoman Sixth Army. The engagement was the first in a series of assaults by the Tigris Corps to try to break through the Ottoman lines to relieve the besieged garrison at Kut.