Encyclopedias, Almanacs, Transcripts, and Maps
- Arrillaga, Basilio
- Arrow Cross Party
- Arrow, Kenneth Joseph
- Arrowsmith, Edmund, St.
- Arrupe, Pedro
- Ars Moriendi
- Ars Praedicandi
- Arsenius Autorianus, Patriarch of Constantinople
- Art (Philosophy)
- Art Collectors and Art Dealers
- Art Historians and Art Critics
- Art, Early Christian
- Arta
- Artapanus
- Arṭas
- Artaxerxes°
- Artemion
- Artemovsk
- Arthurian and Carolingian Legends
- Arthurian Legends