- Accounting--Handbooks, manuals, etc.1
- Accursius, glossator, approximately 1182-approximately 12601
- Acquittals1
- Acrostics1
- Action and adventure fiction1
- Actions and defenses (Islamic law)1
- Acupuncture1
- Acupuncture points1
- Adalī, Muṣṭafá ibn ḥamzah, 17th cent. Natāʼij al-afkār1
- Adhan1
- Adrian VI, Pope, 1459-15231
- Advent--Liturgy1
- Adventure stories, Spanish1
- Aegidius, Saint, Abbot1
- Aesthetics1
- Afghanistan1
- Africa1
- Agama1
- Agamemnon, King of Mycenae (Mythological character)1
- Agazaria, Claudio Boncompagni di1