- Accademia degli Humoristi (Rome, Italy)1
- Account books1
- Action and adventure fiction1
- Actions and defenses1
- Actions and defenses (Islamic law)1
- Administration1
- Adventure stories, Spanish1
- Aeneis (Virgil)1
- Aesthetics1
- Aesthetics, Indic1
- Agunahs1
- Akmal al-Dīn al-Bābartī, Muḥammad ibn Maḥmūd, 1310 or 11-1384 or 5. ʻInāyah1
- Alchemy--Manuscripts1
- Alexander VII, Pope, 1599-16671
- Alexander, the Great, 356 B.C.-323 B.C.1
- Alfasi, Isaac ben Jacob, 1013-11031
- Alfonso I King of Asturias, 693-7561
- Alfonso III, King of Asturias and Leon, approximately 848-approximately 9101
- Alfonso V, King of Asturias and León, 994-1027 or 10281
- Alfonso VI, King of Castile and Leon, 1030-11091