Author
- Arnulf of Lisieux1
- Arnulf of Orléans1
- Arrigucci family1
- Arşı Baba1
- Asad Allāh ibn ʻAbd al-Ghaffār Nādir Māzandarānī1
- Ascanio Sforza1
- Asiriddini Akhsikatī1
- Asmus Biersteden1
- Assembly of the French clergy1
- Athanasius of Alexandria1
- Athīr al-Dīn al-Abharī1
- Audax1
- Augustinians1
- Augustinus Triumphus1
- Augustinus de Leonissa1
- Aurangzeb1
- Awhadi Maraghai1
- Ayn-i Ali1
- Aziz ad-Din Nasafi1
- Azmı̂zade Mustafa Haletı̂1