6 Corps, 6th Corps, Sixth Corps, or VI Corps may refer to:
France VI Cavalry Corps (Grande Armée), a cavalry formation of the Imperial French army during the Napoleonic Wars VI Corps (Grande Armée), a formation of the Imperial French army during the Napoleonic Wars
Germany VI Cavalry Corps (German Empire), a formation of the Imperial German Army during World War I VI Corps (German Empire), a formation of the Imperial German Army prior to and during World War I VI Reserve Corps (German Empire), a formation of the Imperial German Army during World War I VI Army Corps (Wehrmacht), World War II
United States VI Corps (United States) VI Corps (Union Army), a formation of the Union (North) during the American Civil War Sixth Army Corps (Spanish–American War)
Others VI Corps (Ottoman Empire) VI Corps (North Korea) VI Corps (United Kingdom) a formation of the British Army during World War I VI Corps, part of Ground Operations Command, South Korea IV Corps (Pakistan), a field corps of the Pakistan Army 6th Corps (Army of the Republic of Bosnia and Herzegovina)
See also List of military corps by number