64th Regiment or 64th Infantry Regiment may refer to:
Loudon's Highlanders, a unit of the British Army raised in 1745 and ranked as 64th Foot 64th (2nd Staffordshire) Regiment of Foot, a unit of the British Army 64th (Liverpool Irish) Lancashire Rifle Volunteer Corps, a unit of the British Territorial Army 64th (Queen's Own Royal Glasgow Yeomanry) Anti-Tank Regiment, Royal Artillery, British Yeomanry unit 64th Armor Regiment, a unit of the US Army 64th Infantry Regiment (United States), a unit of the US Army
American Civil War Union (Northern) Army 64th Illinois Volunteer Infantry Regiment 64th New York Volunteer Infantry Regiment 64th Ohio Infantry 64th United States Colored Infantry Regiment
Confederate (Southern) Army 64th Virginia Mounted Infantry
See also 64th Division (disambiguation) 64th Squadron (disambiguation)