Author
- Abu Bakr al-Razi1
- Accursius1
- Adam Luce Dominici1
- Adam of Bockenfield1
- Adrian VI1
- Adriano Castellesi1
- Aelianus Tacticus1
- Agnes de Cavaciis1
- Alamanno Gerardi1
- Albericus de Rosate1
- Albertanus of Brescia1
- Alberto Cattani1
- Albertus Magnus1
- Alcuin1
- Alessandro Farnese1
- Alexander III1
- Alexander IV1
- Alexander VI1
- Alfonso Gondi1
- Alfonso de Cartagena1