Encyclopedias, Almanacs, Transcripts, and Maps
- Atto of Vercelli
- Atto, Collection of
- Attrition and Attritionism
- Attwater, Donald
- Atwater, William
- Atzmon, Moshe
- Aub, Joseph
- Aub, Max
- Aubenas, Martyrs of, Bb.
- Aubert of Avranches, St.
- Aubrac, Order of
- Aubusson, Pierre d'
- Auctor of Metz, St.
- Auctorem Fidei
- Audi Benigne Conditor
- Auerbach
- Auerbach, "Red"
- Auerbach, Abraham ben Selig Avi'ezri
- Auerbach, Beatrice Fox
- Auerbach, Berthold