Encyclopedias, Almanacs, Transcripts, and Maps
- Aemilian, Ss.
- Aeon (in the Bible)
- Aeonius of Arles, St.
- Aeronautics, Aviation, and Astronautics
- Aertnys, Jozef
- Aescoly (Weintraub), Aaron Ze?ev
- Aesculapius, Cult of
- Aeterna Caeli Gloria
- Aeterna Christi Munera
- Aeterne Rerum Conditor
- Aeterne Rex Altissime
- Aeterni Patris
- Aethelred II, King of England
- Afendopolo, Caleb ben Elijah
- Affligem, Abbey of
- Affonso°
- Afghani, Jamal Al-Din (1839–1897)
- Afghanistan, The Catholic Church in
- Afia, Aaron
- Afike Jehuda