- Archival materials2
- Armaiolo, Francesco2
- Asceticism--Hinduism2
- Asia2
- Asia--Ganges River2
- Astarābādhī, Muḥammad ibn ʻAlī, -1618 or 1619. Manhaj al-maqāl fī taḥqīq aḥwāl al-rijāl2
- Astarābādī, al-Ḥasan ibn Muḥammad, d. 1315. Wāfīyah fī sharḥ al-Kāfīyah2
- Astrometeorology2
- Astronomical literature2
- Astronomy, Arab--Tables2
- Augustine, of Hippo, Saint, 354-4302
- Augustinians2
- Austria--Vienna2
- Azharot2
- Babism2
- Badr al-ṭāliʻ fī ḥall Jamʻ al-jawāmiʻ (Maḥallī, Jalāl al-Dīn Muḥammad ibn Aḥmad)2
- Balarāma (Hindu deity)2
- Bandini, Francesco, 1505-15882
- Bartolomei, Lorenzo2
- Battle of Badr (Badr Ḥunayn, Saudi Arabia : 624)2