- Alba, Fernando Alvarez de Toledo, duque de, 1507-15821
- Alban, Saint, -304?1
- Alchemy--Bibliography1
- Alexander, de Villa Dei. Doctrinale puerorum1
- Alexius, Saint1
- Alfonso I King of Asturias, 693-7561
- Alfonso III, King of Asturias and Leon, approximately 848-approximately 9101
- Alfonso V, King of Aragon, 1396-14581
- 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
- Allegories1
- Almagest (Ptolemy)1
- Ambrose, Saint, Bishop of Milan, -3971
- Ancestor worship--Hinduism1
- Andria (Terence)1
- Angels1
- Animal culture1
- Animal sacrifice1