- Astronomical instruments1
- Astronomy1
- Astronomy, Arab6
- Atlantic Ocean--English Channel1
- Augustine, of Hippo, Saint, 354-4301
- Austria2
- Authors, Classical18
- Autographs60
- Avatars (Religion)1
- Avicenna, 980-1037. Tafsīr Sūrat al-Ikhlāṣ1
- Ayyubids2
- Azerbaijani poetry1
- Badawī, Aḥmad, 1200?-12761
- Badʼ al-amālī (Ūshī, ʻAlī ibn ʻUthmān)9
- Bahnasī, ʻAbd al-Wahhāb ibn al-Ḥasan, -1286 or 1287. Naẓm Muthallath Quṭrub3
- Barbarossa, -15461
- Basmalah4
- Batista de Lanuza y Tafalla, Miguel, -1659. Vida de la venerable Madre Geronima de San Estevan1
- Batista de Lanuza y Tafalla, Miguel, -1659. Vida de la venerable madre Feliciana de San Ioseph1
- Battle of Badr (Badr Ḥunayn, Saudi Arabia : 624)1