- Assassination1
- Assumption of the Blessed Virgin Mary1
- Astrology, Hebrew1
- Astronomy, Arab1
- Astronomy, Greek1
- Attila, -4531
- Auctions1
- Audiore, Antonio1
- Augsburg Confession1
- Aurispa, Giovanni, approximately 1376-14591
- Austria--Lambach (Upper Austria)1
- Austria--Vienna1
- Autos-da-fé1
- Averroës, 1126-1198. Talkhīs kitāb al-ʻIbārah1
- Averroës, 1126-1198. Talkhīṣ kitāb al-maqūlāt1
- Averroës, 1126-1198. Talkhīṣ madkhal Furfūriyūs1
- Baglioni, Niccolò1
- Bahrām V, King of Iran, -4381
- Baldi, Filippo1
- Baldini, Antonio1