- Absolution1
- Account books1
- Accursius, glossator, approximately 1182-approximately 12601
- Administration1
- Aeneas (Legendary character)1
- Aeneis (Virgil)1
- Agnes, Saint, Martyr1
- Agriculture1
- Algeria--Hippo (Extinct city)1
- Almanach perpetuum celestium motuum (Zacuto, Abraham ben Samuel)1
- Alum tawed bindings1
- Ambassadors1
- Angels--Christianity1
- Angels--History of doctrines1
- Animals1
- Anthony, of Egypt, Saint, approximately 250-355 or 3561
- Anthony, of Padua, Saint, 1195-12311
- Apocryphal Gospels1
- Apocryphal books (New Testament)1
- Apocryphal books (Old Testament)1