85th Regiment

85th Regiment or 85th Infantry Regiment may refer to:


 * 85th Regiment of Foot (disambiguation), several units of the British Army
 * 85th Burman Rifles, a unit of the British Indian Army
 * 85th Armoured Regiment (India)
 * 85th Infantry Regiment (United States)

Union Army (American Civil War):
 * 85th Illinois Volunteer Infantry Regiment
 * 85th Indiana Infantry Regiment
 * 85th Ohio Infantry
 * 85th Pennsylvania Infantry