27th Regiment may refer to:
27th (Inniskilling) Regiment of Foot, infantry regiment of the British Army 27th Marine Regiment (United States), deactivated infantry regiment of the United States Marine Corps 27th Infantry Regiment (Ottoman Empire) 27th Infantry Regiment (United States), unit of the United States Army established in 1901 27th Connecticut Infantry Regiment 27th Maine Infantry Regiment 27th Illinois Infantry Regiment 27th Indiana Infantry Regiment 27th Iowa Infantry Regiment 27th Kentucky Infantry Regiment 27th Michigan Infantry Regiment 27th New Jersey Infantry Regiment 27th New York Infantry Regiment 27th New York Volunteer Infantry Regiment (1873) 27th Wisconsin Infantry Regiment 27th Punjabis, infantry regiment of the British Indian Army 27th Lancers, temporary cavalry regiment of the British Army from 1941 to 1945
See also 27th Army (disambiguation) 27th Battalion (disambiguation) 27th Brigade (disambiguation) XXVII Corps (disambiguation) 27th Division (disambiguation) 27 Squadron (disambiguation)