- Burdah (Būṣīrī, Sharaf al-Dīn Muḥammad ibn Saʻīd)1
- Bèze, Théodore de, 1519-16051
- Béla IV, King of Hungary, 1206-12701
- Bēssariōn, Cardinal, 1403-14721
- Cabala and Christianity1
- Calendar1
- Calendars1
- Campeggi, Tommaso, 1483-15641
- Canon law--Commentaries1
- Canticles1
- Caracciolo, Antonio, 1515?-15701
- Carretto, Giovanni Francesco1
- Cartularies1
- Castro, João de, 1500-15481
- Categoriae (Aristotle)1
- Catherine, of Siena, Saint, 1347-13801
- Catholic Church. Archdiocese of Breslau (Germany)1
- Cathédrale de Chartres1
- Celsus, Saint, -681
- Chaldean rite (Catholic Church)1