17th Regiment
- 17 Squadron (disambiguation)
- 17th Brigade (disambiguation)
- 17th Cavalry Regiment (United States)
- 17th Division (disambiguation)
- 17th Illinois Volunteer Infantry Regiment
- 17th Indiana Infantry Regiment
- 17th Infantry Regiment (Republic of Korea)
- 17th Infantry Regiment (United States)
- 17th Iowa Volunteer Infantry Regiment
- 17th Lancers
- 17th Maine Volunteer Infantry Regiment
- 17th Michigan Volunteer Infantry Regiment
- 17th Regiment Illinois Volunteer Cavalry
- 17th Regiment of Light Dragoons (1759)
- 17th Wisconsin Volunteer Infantry Regiment
- Combat Logistics Regiment 17
- Royal Leicestershire Regiment