IX Corps

9 Corps, 9th Corps, Ninth Corps, or IX Corps may refer to:


 * IX Waffen Mountain Corps of the SS (Croatian)
 * IX Corps (German Empire), a unit of the Imperial German Army prior to and during World War I
 * IX Reserve Corps (German Empire), a unit of the Imperial German Army during World War I
 * IX Army Corps (Germany) of World War II
 * IX Corps (Ottoman Empire)
 * IX Corps (United Kingdom)
 * IX Corps (Union Army)
 * IX Corps (United States)
 * 9ème corps d'armée (France)