XXXIV Corps or 34th Corps may refer to:
XXXIV Corps (British India) XXXIV Army Corps (Wehrmacht) 34th Army Corps (Russian Empire) 34th Rifle Corps, Soviet Union 34th (1st Rifle Rangers) Lanarkshire Rifle Volunteer Corps 34th Kent (Deptford Town Artisans) Rifle Volunteer Corps 34th (Saddleworth) Yorkshire West Riding Rifle Volunteer Corps 34th Corps (Vietnam)
See also List of military corps by number 34th Army (disambiguation) 34th Division (disambiguation) 34th Brigade (disambiguation) 34th Regiment (disambiguation) 34th Battalion (disambiguation) 34th Squadron (disambiguation)