31st Regiment

31st Regiment or 31st Infantry Regiment may refer to:

Infantry regiments

• 31 Combat Engineer Regiment (The Elgins), a unit of the Canadian Army
• 31st Infantry Regiment (Thailand), a unit of the Royal Thai Army
• 31st (Huntingdonshire) Regiment of Foot, a unit of the United Kingdom Army
• 31st Infantry Regiment (United States), a unit of the United States Army

Cavalry regiments

• 31st Mechanized Infantry Regiment "Asturias", a unit of the Spanish Army
• 31st Cavalry Regiment (United States), a unit of the United States Army

Artillery regiments

• 31st Reserve Field Artillery Regiment (Ireland), a unit of the Irish Army

Combat support regiments

• 31 (City of London) Signal Regiment, a unit of the United Kingdom Army

American Civil War regiments

• 31st Illinois Volunteer Infantry Regiment
• 31st Iowa Volunteer Infantry Regiment
• 31st New York Volunteer Infantry Regiment
• 31st Infantry Regiment, United States Colored Troops
• 31st Wisconsin Volunteer Infantry Regiment

See also

• 31st Division (disambiguation)
• 31st Group (disambiguation)
• 31st Brigade (disambiguation)
• 31st Battalion (disambiguation)
• 31st Squadron (disambiguation)