15th Regiment

15th Regiment or 15th Infantry Regiment may refer to:

• 15th Field Regiment, Royal Canadian Artillery
• 15th Infantry Regiment (Philippine Commonwealth Army)
• 15th Infantry Regiment (South Korea)
• East Yorkshire Regiment (15th Regiment of Foot, United Kingdom)
• 15th Infantry Regiment (United States)
• 15th Infantry Regiment (USAFIP-NL)
• 15th New York Regiment
• 15th Poznań Uhlan Regiment (Poland)

American Revolutionary War regiments

• 15th Continental Regiment
• 15th Massachusetts Regiment
• 15th Virginia Regiment

American Civil War regiments

Confederate (Southern) Army regiments

• 15th South Carolina Infantry Regiment
• 15th Regiment Alabama Infantry

Union (Northern) Army regiments

• 15th Connecticut Infantry Regiment
• 15th Illinois Volunteer Infantry Regiment
• 15th Regiment Illinois Volunteer Cavalry
• 15th Iowa Volunteer Infantry Regiment
• 15th Regiment Massachusetts Volunteer Infantry
• 15th West Virginia Volunteer Infantry Regiment
• 15th Wisconsin Volunteer Regiment