- Acciaioli, Francesco1
- Acciaiuoli, Roberto, 1467-15471
- Adarve, Lazardo del1
- Administration1
- Administration of estates1
- Aegidius, Saint, Abbot1
- Aesop's fables1
- Affinity (Law)1
- Africa1
- Africa--Atlantic Coast1
- Agazaria, Claudio Boncompagni di1
- Agnihotra (Hindu rite)1
- Agriculture1
- Ajurrūmīyah (Ibn Ājurrūm, Muḥammad ibn Muḥammad)1
- Albizzi, Costanza1
- Alchemy--Manuscripts1
- Alcoholism--Religious aspects--Islam1
- Alfīyat al-ʻIrāqī (ʻIrāqī, ʻAbd al-Raḥīm ibn al-Ḥusayn)1
- Alonso de Bracamente1
- Amadori, Bartolomeo1