XV Corps
- 15 Squadron (disambiguation)
- 15th Airborne Corps
- 15th Army (disambiguation)
- 15th Army Corps (Russian Empire)
- 15th Brigade (disambiguation)
- 15th Division (disambiguation)
- 15th Group (disambiguation)
- 15th Regiment (disambiguation)
- 15th Rifle Corps
- 15th Tank Corps
- 15th Wing (disambiguation)
- List of military corps by number
- XV Army Corps (Wehrmacht)
- XV Corps (British India)
- XV Corps (German Empire)
- XV Corps (India)
- XV Corps (Ottoman Empire)
- XV Corps (Union Army)
- XV Corps (United Kingdom)
- XV Corps (United States)
- XV Mountain Corps (Wehrmacht)
- XV Royal Bavarian Reserve Corps
- XV SS Cossack Cavalry Corps