103rd Regiment

In military terms, 103rd Regiment may refer to:

Infantry regiments 103rd Regiment of Foot (disambiguation), several units of the British Army 103rd Regiment (Calgary Rifles), a unit of the Canadian non-permanent militia 103rd Indiana Infantry Regiment, a unit of the Union Army 103rd Ohio Infantry Regiment, a unit of the Union Army 103rd Infantry Regiment (United States)

Other regiments 103rd Armor Regiment, a unit of the Pennsylvania National Guard 103rd Cavalry Regiment, a former unit of the Pennsylvania National Guard 103rd Field Artillery Regiment, a unit of the US Army 103rd (Lancashire Artillery Volunteers) Regiment Royal Artillery

See also 103rd Division (disambiguation)