- Alessandri, Niccolò degli1
- Alessandri, Piero degli9
- Alessandri, Pietro degli2
- Alessandro, Pietro di1
- Alexander Balas, King of Syria, -145 B.C.1
- Alexander III, Pope, -11811
- Alexander, de Villa Dei. Doctrinale puerorum1
- Alexander, the Great, 356 B.C.-323 B.C--Romances2
- Alexander, the Great, 356 B.C.-323 B.C.7
- Alfonso V, King of Aragon, 1396-14581
- Allegory2
- Almanacs1
- Amadori, Lorenzo1
- Ambassadors1
- Ambrogio, Leonardo d'1
- Ambrose, Saint, Bishop of Milan, -3971
- Ambrosian chants2
- Ambrosian rite (Catholic Church)1
- Amedei, Bartolomeo1
- Amelius, Martyr1