16th Regiment
- 16th Air Defence Regiment, Royal Australian Artillery
- 16th Army (disambiguation)
- 16th Brigade (disambiguation)
- 16th Division (disambiguation)
- 16th Group (disambiguation)
- 16th Illinois Volunteer Infantry Regiment
- 16th Infantry Regiment (South Korea)
- 16th Infantry Regiment (United States)
- 16th Maine Volunteer Infantry Regiment
- 16th Massachusetts Regiment
- 16th Michigan Volunteer Infantry Regiment
- 16th Punjab Regiment (Pakistan)
- 16th Regiment "Belluno"
- 16th Regiment Illinois Volunteer Cavalry
- 16th Regiment Royal Artillery
- 16th Squadron (disambiguation)
- 16th The Queen's Lancers
- 16th West Virginia Volunteer Infantry Regiment
- 16th Wing (disambiguation)
- 16th Wisconsin Volunteer Infantry Regiment
- Bedfordshire and Hertfordshire Regiment