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