- Annotations8
- Annunciation to the Blessed Virgin Mary1
- Antella, Francesco dell'1
- Anthony, of Egypt, Saint, approximately 250-355 or 3561
- Anthropomorphic letters1
- Antidotes1
- Antiquities2
- Antisemitism1
- Antoni, Jacopo1
- Antonio Magistri1
- Antonio, Giuliano di1
- Antonio, Lorenzo di1
- Antonio, Piero di1
- Anwār al-tanzīl wa-asrār al-taʼwīl (Bayḍāwī, ʻAbd Allāh ibn ʻUmar)2
- Aphorisms and apothegms1
- Apollonius, of Tyana1
- Apologetic writings2
- Apostasy--Catholic Church1
- Appiani, Iacopo, 1459-15101
- Apraduno, Antonio di1