- Augsburg Confession1
- Augustinians1
- Austria1
- Austria--Kitzbühel1
- Austria--Lambach (Upper Austria)1
- Austria--Vienna1
- Authority--Religious aspects1
- Autos-da-fé1
- Aḥmadī, Aḥmad ibn Muṣṭafá, active 1529. Munjī al-ʻaqāʼid1
- Bahjah al-Wardīyah (Ibn al-Wardī, Zayn al-Dīn ʻUmar ibn al-Muẓaffar)1
- Bahjah al-marḍīyah (Suyūṭī)1
- Bahrām V, King of Iran, -4381
- Balaibalan1
- Barlotta family1
- Basilica di S. Marco Evangelista al Campidoglio (Rome, Italy)1
- Bassini, Antonio1
- Bassāmah (Ibn ʻAbdūn, ʻAbd al-Majīd ibn ʻAbd Allāh)1
- Bathing customs1
- Battle of Karbalāʼ (Karbalāʼ, Iraq : 680)1
- Bayḍāwī, ʻAbd Allāh ibn ʻUmar, d. 1286? Lubb al-albāb1