- Astronomy, Medieval1
- Birjandī, ʻAbd al-ʻAlī ibn Muḥammad ibn Ḥusayn, active 16th century. Bīst bāb dar taqvīm1
- Birth of a person1
- Bookplates1
- Botany1
- Botany, Medical1
- Breastfeeding (Islamic law)1
- Burhān al-Sharīʻah, Maḥmūd ibn ʻUbayd Allāh, -1274 or 1275. Wiqāyat al-riwāyah1
- Bāb al-Ḥādī ʻashar (Ibn al-Muṭahhar al-Ḥillī, al-Ḥasan ibn Yūsuf)1
- Bābā Afz̤al, active 13th century. Jāvidānʹnāmah1
- Calendar, Chinese1
- Caliphs1
- Calligraphy, Persian1
- Chishtīyah1
- Classification1
- Cloth bindings1
- Comets1
- Commerce1
- Constellations1
- Criticism, Textual1