71st Regiment may refer to:
71st Regiment of Foot (1758), former British Army regiment, 1758–1763
71st Regiment of Foot, Fraser's Highlanders, former British Army regiment, raised for the American Revolution, 1775–1786 71st (Highland) Regiment of Foot, former British Army regiment, active in 1777–1881 71 (Yeomanry) Signal Regiment, British Territorial Army regiment established in 1969 71st Coorg Rifles, British Indian Army regiment, active in 1767–1904 71st Infantry Regiment (Greece), Hellenic Army regiment established in 1940 71st Infantry Regiment (New York), New York State Guard regiment established in 1850 71st Air Defense Artillery Regiment (United States), US Army regiment established in 1918 71st Infantry Regiment (United States), former US Army regiment, active in 1918–1919 71st Cavalry Regiment (United States), US Army regiment established in 1941