15th Regiment
15th Regiment or 15th Infantry Regiment may refer to:
- 15th Field Artillery Regiment (Canada)
- 15th Infantry Regiment (South Korea)
- 15th Regiment of Foot, United Kingdom
- 15th Infantry Regiment (United States)
- 15th Infantry Regiment (USAFIP-NL), part of United States Army Forces in the Philippines – Northern Luzon
- 15th New York National Guard Regiment, United States
- 15th Poznań Uhlan Regiment, Poland
- 15th Guards Motor Rifle Regiment, Russia
American Revolutionary War regiments
American Civil War regiments
Confederate (Southern) Army regiments
Union (Northern) Army regiments
- 15th Connecticut Infantry Regiment
- 15th Illinois Infantry Regiment
- 15th Illinois Cavalry Regiment
- 15th Iowa Infantry Regiment
- 15th Massachusetts Infantry Regiment
- 15th West Virginia Infantry Regiment
- 15th Wisconsin Infantry Regiment