- Bulqīnī, ʻUmar ibn Raslān, 1324-14031
- Burdah (Būṣīrī, Sharaf al-Dīn Muḥammad ibn Saʻīd)1
- Byzantine Empire1
- Calligraphy, Arabic1
- Cantillation1
- Capponi family1
- Capponi, Bernardo1
- Capponi, Cappone1
- Cappucci, Arrigo di1
- Catholic Church. Diocese of Sigüenza-Guadalajara (Spain)1
- Ceccoli, Baldo1
- Ceccoli, Bartolo1
- Certano, Daina di1
- Christian ethics1
- Christian ethics--Middle Ages1
- Christian women--Conduct of life1
- Christianity1
- Church history--Middle Ages1
- Clasps1
- Cofradía de la Transfixión de Zaragoza1