- 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
- Alfonso VII, The Emperor, King of Castile, 1104-11571
- Alfonso VIII, King of Castile, 1155-12141
- Alfonso X, King of Castile and Leon, 1221-12842
- Allegories1
- Almanach perpetuum celestium motuum (Zacuto, Abraham ben Samuel)1
- Alphabet books1
- Alphabets1
- Alī Ādila Śāha II, Sultan of Bijapur, 1638-16721
- America1
- Amulets (Judaism)1
- Ana, Queen, consort of Philip II, King of Spain, 1549-15801
- Anecdotes1
- Angels--Islam1
- Animals, Mythical1
- Annals and chronicles1
- Annotations1
- Annunciation to the Blessed Virgin Mary2