Encyclopedias, Almanacs, Transcripts, and Maps
- Arledge, Roone Pinckney, Jr.
- Arlt, Roberto (1900–1942)
- Armada del Mar del Sur
- Armed Forces
- Armée de Libé
- Armendáriz, José de (1670–?)
- Armendáriz, Pedro (1912–1963)
- Armenian Americans
- Armenian Community of Jerusalem
- Armenian Genocide
- Armenian Millet
- Armenian Revolutionary Movement
- Armenians in the Middle East
- Armijo, Manuel (1801–1853)
- Arminius and Arminianism
- Armour, Thomas Dickson ("Tommy")
- Arms and Armaments in the Middle East
- Arms and Armor
- Armstrong, David M. (1926–)
- Armstrong, Garner Ted