Encyclopedias, Almanacs, Transcripts, and Maps
- Arcadius, Roman Emperor
- Arcel, Ray
- Archa
- Archaeologists
- Archangela Girlani, Bl.
- Archangelo of Calatafimi, Bl.
- Archbishop
- Archchancellor
- Archdiocese
- Arche International, L'
- Archelais
- Archelaus
- Archerd, Army
- Archiereus
- Archipherecites
- Archisynagogos
- Architecture and Architects
- Archives, Ecclesiastical
- Archives, U.S. Catholic
- Archivolti, Samuel