8th Corps, Eighth Corps, or VIII Corps may refer to:
- VIII Corps (Grande Armée), a unit of the Imperial French army during the Napoleonic Wars
- VIII Army Corps (German Confederation)
- VIII Corps (German Empire), a unit of the Imperial German Army prior to and during World War I
- VIII Reserve Corps (German Empire), a unit of the Imperial German Army during World War I
- 8th Air Corps (Germany)
- VIII Army Corps (Wehrmacht), Germany
- VIII Corps (Ottoman Empire)
- 8th Army Corps (Russian Empire)
- 8th Air Defence Corps, Soviet Union and Russia
- 8th Cavalry Corps (Soviet Union)
- 8th Mechanized Corps (Soviet Union)
- 8th Estonian Rifle Corps a unit of the Soviet Army
- 8th Army Corps (Ukraine)
- VIII Corps (United Kingdom)
- VIII Corps (United States)
- VIII Corps (Union Army), a unit in the American Civil War
- Eighth Army Corps (Spanish–American War)
- 8th Corps (Yugoslav Partisans)
- VIII Corps, part of Ground Operations Command, South Korea
See also
- List of military corps by number
- 8th Army (disambiguation)
- 8th Brigade (disambiguation)
- 8th Division (disambiguation)
- 8th Regiment (disambiguation)
- 8 Squadron (disambiguation)