- Ablutions (Islamic law)1
- Abridgments1
- Abū al-Layth al-Samarqandī, Naṣr ibn Muḥammad, -983? Muqaddimah fī al-ṣalāh1
- Abū al-Saʻūd Muḥammad ibn Muḥammad, 1492 or 1493-1574 or 15751
- Abū Ḥanīfah, -767 or 768. Maqṣūd fī al-taṣrīf1
- Accademic fiorentina1
- Acronyms1
- Actions and defenses1
- Adhan1
- Administration1
- Adrian VI, Pope, 1459-15231
- Aegidius, Saint, Abbot1
- Aesop's fables1
- Aggada1
- Agnihotra (Hindu rite)1
- Agriculture1
- Agustín, Antonio, 1517-1586. Dialogos de medallas inscriciones y otras antiguedades1
- Ajurrūmīyah (Ibn Ājurrūm, Muḥammad ibn Muḥammad)1
- Alba, Fernando Alvarez de Toledo, duque de, 1507-15821
- Albizzi, Costanza1