Fifteenth Army

• 15 Squadron (disambiguation)
• 15th Airborne Corps
• 15th Army (People's Republic of China)
• 15th Army (RSFSR)
• 15th Army (Soviet Union)
• 15th Army (Wehrmacht)
• 15th Army Group
• 15th Brigade (disambiguation)
• 15th Division (disambiguation)
• 15th Group (disambiguation)
• 15th Regiment (disambiguation)
• 15th Wing (disambiguation)
• Fifteenth Army (Japan)
• Fifteenth United States Army
• Japanese Fifteenth Area Army
• XV Corps (disambiguation)