Author
- Antonius Ferro1
- Antonius of Vercelli1
- António Vieira1
- António das Chagas1
- Arnaldus, of Brussels1
- Arşı Baba1
- Asad Allāh ibn Ismāʻīl Kāẓimī1
- Asad Allāh ibn ʻAbd al-Ghaffār Nādir Māzandarānī1
- Ashkenazi, Malkiel, -approximately 16201
- Asif al-Zaman, 1885-19611
- Assar Tabrizi1
- Athanasius of Alexandria1
- Augustinus de Leonissa1
- Aurelius Victor1
- Avraham1
- Avraham Tsahalon1
- Avraham Yedidyah ben Menaḥem Shimshon Basile1
- Avraham ben Mosheh Heilpronn1
- Avraham ʻAmiʼel1
- Awn ad-Din ibn Hubayra1