Author
- Antonia Tanini Pulci1
- Antonio Barbaro1
- Antonio Bernardi1
- Antonio Gazio1
- Antonio Millo1
- Antonio de Villegas1
- Antonio de la Torre1
- Antonius de Carlenis1
- Antonius de Vecelli1
- António Nunes Ribeiro Sanches1
- António Vieira1
- Apostolic Camera1
- Arles1
- Armenian Catholic Church1
- Arnaldus de Villa Nova1
- Arnold-André Sittard1
- Arnulf of Bohéries1
- Arrigucci family1
- Arīnī, Muḥammad ibn Najm1
- Arşı Baba1