Author
- Antonio de Villegas1
- Antonio de la Torre1
- António Vieira1
- Arles1
- Armenian Catholic Church1
- Arnaldus de Villa Nova1
- Arnold-André Sittard1
- Arnulf of Bohéries1
- Arşı Baba1
- Asher ben Jehiel1
- Ataullah Mehmet Efendi1
- Athanasius of Alexandria1
- Athīr al-Dīn al-Abharī1
- Augustinus de Leonissa1
- Autolycus of Pitane1
- Avraham Tsahalon1
- Avraham Yedidyah ben Menaḥem Shimshon Basile1
- Avraham ben Mosheh Heilpronn1
- Awn ad-Din ibn Hubayra1
- Ayyūb Shaykhī ibn Ḥasan Riḍá1