26 Corps, 26th Corps, Twenty Sixth Corps, or XXVI Corps may refer to:
26th Army Corps (Russian Empire) 26th Mechanized Corps (Soviet Union) 26th Tank Corps, Soviet Union XXVI Reserve Corps (German Empire), a unit during World War I
See also List of military corps by number 26th Battalion (disambiguation) 26th Brigade (disambiguation) 26th Regiment (disambiguation) 26 Squadron (disambiguation)