- Aḥsāʼī, Aḥmad ibn Zayn al-Dīn, 1753-1826. Ziyādāt al-Fawāʼid1
- Babism1
- Bacterial diseases1
- Badawī, Aḥmad, 1200?-12761
- Bahaüddin Nakşibend, 1318-1389. Awrād1
- 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
- Bakrī, Abū al-Ḥasan ibn Jalāl al-Dīn, -approximately 1543. Ḥizb1
- Balaibalan1
- Balkan Peninsula1
- Bank deposits (Islamic law)1
- Baqī ibn Makhlad, 816 or 17-889 or 90. Musnad1
- Bardaʻī, Muḥammad ibn Muḥammad, -1520 or 1521. Ḥāshiyat al-Bardāʻī1
- Bassāmah (Ibn ʻAbdūn, ʻAbd al-Majīd ibn ʻAbd Allāh)1
- Bathhouses1
- Battle of Badr (Badr Ḥunayn, Saudi Arabia : 624)1