Author
- Antonio Gazio1
- Antonio Millo1
- Antonio d'Azario1
- Antonio de Nebrija1
- Antonio de Villegas1
- Antonio de la Torre1
- Antonius Ferro1
- Antonius of Vercelli1
- António Vieira1
- António das Chagas1
- Arles1
- Arnold-André Sittard1
- Arnulf of Bohéries1
- Arnulf of Lisieux1
- Arnulf of Orléans1
- Arşı Baba1
- Asad Allāh ibn Ismāʻīl Kāẓimī1
- Asad Allāh ibn ʻAbd al-Ghaffār Nādir Māzandarānī1
- Ascanio Savorgnano1
- Asher ben Jehiel1