14th Regiment
- 14th (Buckinghamshire) Regiment of Foot
- 14th Air Defence Artillery Regiment (Belgium)
- 14th Alabama Infantry Regiment
- 14th Alpini Regiment
- 14th Brigade (disambiguation)
- 14th Cavalry Regiment
- 14th Continental Regiment
- 14th Division (disambiguation)
- 14th Illinois Cavalry Regiment
- 14th Illinois Infantry Regiment
- 14th Indiana Infantry Regiment
- 14th Infantry Regiment (United States)
- 14th Iowa Infantry Regiment
- 14th Maine Infantry Regiment
- 14th Marine Regiment (United States)
- 14th Michigan Infantry Regiment
- 14th Regiment (New York State Militia)
- 14th Regiment Royal Artillery
- 14th Unmanned Aerial Vehicle Regiment (Ukraine)
- 14th West Virginia Infantry Regiment
- 14th Wisconsin Infantry Regiment
- 2nd/14th Light Horse Regiment
- United States Army Forces in the Philippines – Northern Luzon