53rd Regiment

53rd Regiment or 53rd Infantry Regiment may refer to:


 * 53rd (Napier's) Regiment of Foot, a unit of the British Army
 * 53rd (Shropshire) Regiment of Foot, a unit of the British Army
 * 53rd Sikhs (Frontier Force), a unit of the British Indian Army
 * 53rd (City of London) Heavy Anti-Aircraft Regiment, Royal Artillery
 * 53rd Anti-Aircraft Missile Regiment (Romania)
 * 53rd Coast Artillery Regiment (United States)
 * 53rd Infantry Regiment (Imperial Japanese Army)
 * 53rd Infantry Regiment (United States)
 * 53rd Coast Artillery Regiment, United States

American Civil War regiments:
 * 53rd Regiment Alabama Cavalry, a unit of the Confederate States Army
 * 53rd Illinois Volunteer Infantry Regiment, a unit of the Union Army
 * 53rd Indiana Infantry Regiment, a unit of the Union Army
 * 53rd Regiment Kentucky Volunteer Mounted Infantry, a unit of the Union Army
 * 53rd Regiment Massachusetts Volunteer Infantry, a unit of the Union Army
 * 53rd Ohio Infantry, a unit of the Union Army
 * 53rd Pennsylvania Infantry, a unit of the Union Army
 * 53rd Wisconsin Volunteer Infantry Regiment, a unit of the Union Army