The First Battle of İnönü (Turkish: Birinci İnönü Muharebesi) took place between 6 and 11 January 1921 near İnönü in Hüdavendigâr Vilayet (present-day Eskişehir Province, Turkey) during the Greco-Turkish War (1919–22), also known as the western front of the larger Turkish War of Independence. This was the first battle for the Army of the Grand National Assembly that was newly built standing army (Düzenli ordu) in place of irregular troops.
