84th Regiment or 84th Infantry Regiment may refer to: *

84th Regiment of Foot (1759) The 84th Regiment of Foot was a British regiment raised for service in India with the British East India Company. History Raised in England in 1758 during the Seven Years' War, the regiment was shipped to Madras, India in 1759. The regiment ...

, a unit of the British Army, active from 1759 to 1765, which served entirely in British India * 84th Regiment of Foot (Royal Highland Emigrants), a unit of the British Army, active from 1775 to 1784, which served in the American Revolutionary War *

84th (York and Lancaster) Regiment of Foot The 84th (York and Lancaster) Regiment of Foot was a regiment in the British Army, raised in 1793. Under the Childers Reforms it amalgamated with the 65th (2nd Yorkshire, North Riding) Regiment of Foot to form the York and Lancaster Regiment, with ...

, a unit of the British Army, active from 1793 to 1881, which served in the Napoleonic Wars and in India * 84th Infantry Regiment (Philippine Commonwealth Army), a unit of the Philippine Commonwealth Army, active from 1942 to 1946, which served in the Second World War ;American Civil War * 84th Illinois Volunteer Infantry Regiment, a unit of the Union (North) Army * 84th Regiment Indiana Infantry, a unit of the Union (North) Army * 84th New York Volunteer Infantry Regiment, a unit of the Union (Northern) Army * 84th Ohio Infantry, a unit of the Union (Northern) Army * 84th Pennsylvania Infantry, a unit of the Union (Northern) Army

See also