Author
- Antonio di Domenice di Ciacco1
- Antonio di. Montalvo1
- Antonius Ferro1
- Antonius de Vecelli1
- António Nunes Ribeiro Sanches1
- Arles1
- Armenian Catholic Church1
- Arnaldus de Villa Nova1
- Arnulf of Bohéries1
- Arrigucci family1
- Ascanio Savorgnano1
- Ashkenazi, Malkiel, -approximately 16201
- Augustine of Hippo1
- Augustinians1
- Augustinus de Leonissa1
- Averroes1
- Azar Bigdeli1
- Aḥmad ibn Muḥammad Ghamrī1
- Aḥmad ibn Mūsá Khayālī1
- Aḥmad ibn Qāsim Ghazzī1