78th Regiment

78th Regiment or 78th Infantry Regiment may refer to:


 * 78th (Highlanders) Regiment of Foot, a unit of the United Kingdom Army
 * 78th Fraser Highlanders, a unit of the United Kingdom Army
 * 78th Moplah Rifles. a regiment of the British Indian Army
 * 78th United States Colored Infantry Regiment, a unit of the Union (Northern) Army during the American Civil War, previously known as the 19th Corps d'Afrique Infantry Regiment
 * 78th Indiana Volunteer Infantry Regiment, a unit of the Union (Northern) Army during the American Civil War
 * 78th Illinois Volunteer Infantry Regiment, a unit of the Union (Northern) Army during the American Civil War
 * 78th New York Volunteer Infantry Regiment, a unit of the Union (Northern) Army during the American Civil War, nicknamed the 78th Highlanders in reference to the British units
 * 78th Ohio Volunteer Infantry Regiment, a unit of the Union (Northern) Army during the American Civil War
 * 78th Pennsylvania Volunteer Infantry Regiment, a unit of the Union (Northern) Army during the American Civil War
 * 78th Infantry Regiment (Imperial Japanese Army), a unit of the Imperial Japanese Army during World War II
 * 78th Independent Infantry Regiment (North Korea), a unit of the Korean People's Army which participated in the Second Battle of Seoul during the Korean War