Author
- Arnulf of Lisieux1
- Arnulf of Orléans1
- Arrigucci family1
- Arīnī, Muḥammad ibn Najm1
- Arşı Baba1
- Asad Allāh ibn Ismāʻīl Kāẓimī1
- Asad Allāh ibn ʻAbd al-Ghaffār Nādir Māzandarānī1
- Ascanio Sforza1
- Asher ben Jehiel1
- Ashkenazi, Malkiel, -approximately 16201
- Asif al-Zaman, 1885-19611
- Asiriddini Akhsikatī1
- Asmus Biersteden1
- Assembly of the French clergy1
- Ataullah Mehmet Efendi1
- Audax1
- Augustinians1
- Augustinus Triumphus1
- Augustinus de Leonissa1
- Aulus Gellius1