71st Regiment

71st Regiment may refer to:


 * 71 (Yeomanry) Signal Regiment, British Territorial Army regiment established in 1969
 * 71st Air Defense Artillery Regiment (United States), US Army regiment established in 1918
 * 71st Cavalry Regiment (United States), US Army regiment established in 1941
 * 71st Coorg Rifles, British Indian Army regiment, active in 1767–1904
 * 71st Illinois Volunteer Infantry Regiment, Union Army regiment raised during the American Civil War
 * 71st Infantry Regiment (Greece), Hellenic Army regiment established in 1940
 * 71st Infantry Regiment (New York), New York State Guard regiment established in 1850
 * 71st Infantry Regiment (United States), former US Army regiment, active in 1918–1919
 * 71st (Highland) Regiment of Foot, former British Army regiment, active in 1758–1881
 * 71st Ohio Infantry, Union Army regiment raised during the American Civil War
 * 71st Pennsylvania Infantry, Union Army regiment raised during the American Civil War
 * 71st Regiment of Foot, Fraser's Highlanders, former British Army regiment, raised for the American Revolution
 * 71st United States Colored Infantry Regiment, Union Army regiment raised during the American Civil War