- Apostles in art1
- Arbalet, Jean1
- Arnaldus, de Villanova, -13111
- Arte della lana (Guild : Florence, Italy)1
- Astrology, Arab1
- Astronomical instruments1
- Astronomy, Arab1
- Astronomy, Greek1
- Attila, -4531
- Augsburg Confession1
- Aurispa, Giovanni, approximately 1376-14591
- Austria--Lambach (Upper Austria)1
- Baptism1
- Baptism of Jesus Christ1
- Baptism--Catholic Church1
- Barbara, Saint1
- Basilica di S. Marco Evangelista al Campidoglio (Rome, Italy)1
- Bebel, Heinrich, 1472-15181
- Belgium--Andenne1
- Bible. Corinthians, 2nd1