The 9th Landwehr Division (9. Landwehr-Division) was a unit of the Imperial German Army in World War I. The division was formed in January 1915 as the Mühlenfels Division (Division Mühlenfels), named after its commander, and became the 9th Landwehr Division on February 14, 1915. The division was disbanded in 1919 during the demobilization of the German Army after World War I.