15th Regiment

• 15 Squadron (disambiguation)
• 15th Army (disambiguation)
• 15th Brigade (disambiguation)
• 15th Connecticut Infantry Regiment
• 15th Continental Regiment
• 15th Division (disambiguation)
• 15th Field Regiment, Royal Canadian Artillery
• 15th Group (disambiguation)
• 15th Illinois Volunteer Infantry Regiment
• 15th Infantry Regiment (Philippine Commonwealth Army)
• 15th Infantry Regiment (South Korea)
• 15th Infantry Regiment (USAFIP-NL)
• 15th Infantry Regiment (United States)
• 15th Iowa Volunteer Infantry Regiment
• 15th Massachusetts Regiment
• 15th Regiment Alabama Infantry
• 15th Regiment Illinois Volunteer Cavalry
• 15th Regiment Massachusetts Volunteer Infantry
• 15th South Carolina Infantry Regiment
• 15th Virginia Regiment
• 15th West Virginia Volunteer Infantry Regiment
• 15th Wing (disambiguation)
• 15th Wisconsin Volunteer Regiment
• 369th Infantry Regiment (United States)
• East Yorkshire Regiment
• XV Corps (disambiguation)