Encyclopedias, Almanacs, Transcripts, and Maps
- Aidan of Lindisfarne, St.
- Aiguani, Michele (Anguani, Angriani)
- Aigulf of Lérins, St.
- Aiken, Henry David
- Aikenhead, Mary
- Aikhenvald Yuli Isayevich
- Aimeric of Piacenza
- Ain-Traz, Synods of
- Ainay, Abbey of
- Ainsworth, Henry°
- Airvault, Monastery of
- Aish Hatorah
- Aix, Archdiocese of
- Aizenberg, Nina
- Aizman, David Yakolevich
- Aja??a
- Ak?obhya
- Akaba
- Akademie Fuer Die Wissenschaft Des Juden-Tums
- Akathistos