84th Regiment or 84th Infantry Regiment may refer to:
- 84th Regiment of Foot (1759), a unit of the United Kingdom Army, active from 1759–1765, which served entirely in British India
- 84th Infantry Regiment (Philippine Commonwealth Army), a unit of the Philippine Commonwealth Army, active from 1942–1946, which served in the Second World War
- 84th Regiment of Foot (Royal Highland Emigrants), a unit of the United Kingdom Army, active from 1775–1784, which served in the American Revolution
- 84th (York and Lancaster) Regiment of Foot, a unit of the United Kingdom Army, active from 1793–1881, which served in the Napoleonic Wars and in India
- 84th Illinois Volunteer Infantry Regiment, a unit of the Union (North) Army during the American Civil War
- 84th Regiment Indiana Infantry, a unit of the Union (North) Army during the American Civil War
Famous quotes containing the word regiment:
“We had an inspection today of the brigade. The Twenty-third was pronounced the crack regiment in appearance, ... [but] I could see only six to ten in a company of the old men. They all smiled as I rode by. But as I passed away I couldn’t help dropping a few natural tears. I felt as I did when I saw them mustered in at Camp Chase.”
—Rutherford Birchard Hayes (1822–1893)