The Polish 26th Infantry Division (Polish: 26 Dywizja Piechoty, Austrian German: 26. Infanteriedivision, Hungarian: 26. Gyaloghadosztály) was a unit of the Polish Army. Originally formed as the 4th Infantry Division (Poland) in southern Poland in April 1919, the division was renamed the 26th Infantry Division in 1921. The division would see combat in World War II, being destroyed during the German invasion of Poland in September 1939.