58th Regiment or 58th Infantry Regiment may refer to:
58th Regiment of Foot (disambiguation), three British Army units have carried this name 58th (Middlesex) Searchlight Regiment, Royal Artillery, a British Army unit, 1938–1955 58th Vaughan's Rifles (Frontier Force), a unit of the British Indian Army 58th Infantry Regiment (United States), most recent 58th Infantry in the United States Army
American Civil War Union (Northern) Army 58th Pennsylvania Infantry 58th Illinois Volunteer Infantry Regiment 58th Indiana Infantry Regiment
Confederate (Southern) Army 58th Regiment Alabama Infantry 58th Virginia Infantry