Encyclopedias, Almanacs, Transcripts, and Maps
- Arpad
- Arraby Moor
- Arragel (Al-Ragil), Moses
- Arras, Councils of
- Arras, Martyrs of, Bb.
- Arregui, Antonio María
- Arriaga, Pablo José de
- Arriaga, Rodrigo de
- Arrian°
- Arricivita, Juan Domingo
- Arrieta, Franciso Sales de
- Arrillaga, Basilio
- Arrow Cross Party
- Arrow, Kenneth Joseph
- Arrowsmith, Edmund, St.
- Arrupe, Pedro
- Ars Moriendi
- Ars Praedicandi
- Arsenius Autorianus, Patriarch of Constantinople
- Art (Philosophy)