Author
- Accursius1
- Achilles Statius1
- Adam Luce Dominici1
- Adam Magister1
- Adam of Bockenfield1
- Adam of Eynsham1
- Adrian VI1
- Aelianus Tacticus1
- Agnes de Cavaciis1
- Agnes de Claustris1
- Agostino Staccoli1
- Al-Mubashshir ibn Fātik1
- Alain Chartier1
- Albrecht von Pfalz-Mosbach1
- Aldobrandino da Siena1
- Alessandro da Sassoferrato1
- Alexander III1
- Alexander IV1
- Alexander VI1
- Alfonso X of Castile and Leon1