5th Regiment

• 2/5th Armoured Regiment (Australia)
• 5/42 Evzone Regiment
• 5th Air Reconnaissance Regiment
• 5th Archipelago Regiment
• 5th Army (disambiguation)
• 5th Aviation Regiment (Australia)
• 5th Bengal European Regiment
• 5th Brigade (disambiguation)
• 5th Cavalry Regiment
• 5th Connecticut Regiment
• 5th Continental Regiment
• 5th Corps (disambiguation)
• 5th Division (disambiguation)
• 5th Dragoon Guards
• 5th Foot Guards (German Empire)
• 5th Group (disambiguation)
• 5th Guards Grenadiers
• 5th Infantry Regiment (Greece)
• 5th Infantry Regiment (United States)
• 5th Iowa Volunteer Infantry Regiment
• 5th Marine Regiment (United States)
• 5th Maryland Regiment
• 5th Massachusetts Regiment
• 5th Medium Regiment, Royal Canadian Artillery
• 5th Michigan Volunteer Cavalry Regiment
• 5th Michigan Volunteer Infantry Regiment
• 5th Minnesota Volunteer Infantry Regiment
• 5th Missouri Infantry Regiment (disambiguation)
• 5th New York Regiment
• 5th New York Veteran Volunteer Infantry Regiment
• 5th North Carolina Regiment
• 5th Pennsylvania Regiment
• 5th Regiment Illinois Volunteer Cavalry
• 5th Regiment Iowa Volunteer Cavalry
• 5th Regiment Royal Artillery
• 5th Regiment of Foot
• 5th Royal Tank Regiment
• 5th South Carolina Regiment
• 5th Squadron (disambiguation)
• 5th United States Colored Infantry Regiment
• 5th Virginia Regiment
• 5th West Virginia Volunteer Cavalry Regiment
• 5th West Virginia Volunteer Infantry Regiment
• 5th Wisconsin Volunteer Infantry Regiment
• Fifth Regiment