5th Regiment

5th Regiment or 5th Infantry Regiment may refer to:

Infantry regiments

5th Aviation Regiment (Australia), a unit of the Australian Army
2/5th Armoured Regiment (Australia), a unit of the Australian Army
5th Foot Guards (German Empire), a unit of the Imperial German Army
5th Infantry Regiment (Greece), a unit of the Greek Army
5th Archipelago Regiment, a unit of the Greek Army
5/42 Evzone Regiment, a unit of the Greek Army
5th Guards Grenadiers, a unit of the Imperial German Army
5th Regiment of Foot, a unit of the British Army
5th Dragoon Guards, a unit of the British Army
5th Bengal European Regiment, a unit of the British East India Company
5th Marine Regiment (United States), a unit of the United States Marine Corps
5th Infantry Regiment (United States), a unit of the United States Army
Fifth Regiment, a unit loyal to the Spanish republic at the beginning of the Spanish Civil War