- Bacterial diseases1
- Badawī, Aḥmad, 1200?-12761
- Bahjah al-Wardīyah (Ibn al-Wardī, Zayn al-Dīn ʻUmar ibn al-Muẓaffar)1
- Bahlawān, Mūsá ibn ʻAbd Allāh, -1720 or 1721. Risālah al-qiyāsīyah1
- Bahnasī, ʻAbd al-Wahhāb ibn al-Ḥasan, -1286 or 1287. Naẓm Muthallath Quṭrub1
- Bahnasī, ʻAbd al-Wahhāb ibn al-ḥasan, d. 1286 or 7. Naẓm Muthallath Quṭrub1
- Bahāristān (Jāmī)1
- Bail (Islamic law)1
- Balaibalan1
- Balkan Peninsula1
- Battle of Badr (Badr Ḥunayn, Saudi Arabia : 624)1
- Battles1
- Bayezid I, Sultan of the Turks, approximately 1360-14031
- Bayezid II, Sultan of the Turks, 1447 or 1448-15121
- Bayḍāwī, ʻAbd Allāh ibn ʻUmar, -1286? Lubb al-albāb1
- Bayḍāwī, ʻAbd Allāh ibn ʻUmar, d. 1286? Lubb al-albāb fī ʻilm al-iʻrāb1
- Baḥraq, Muḥammad ibn ʻUmar, 1465-1524. ʻUrwah al-wathīqah1
- Baṭṭāl, Abū Muḥammad ʻAbd Allāh, -7401
- Belgium--Mons1
- Benedict, Saint, Abbot of Monte Cassino1