Dictionary of Christian Biography and Literature to the End of the Sixth Century/C
- Caecilia (1), St.
- Caecilianus (2), archdeacon and bishop of Carthage
- Caesarius (2), St., of Nazianzus
- Caesarius (3), St., bishop of Arles
- Caesarius (7)
- Cainites
- Caius (2), ecclesiastical writer
- Caius (3), pope
- Calandio or Calendio, bishop of Antioch
- Calligonus
- Callistus (1), pope
- Caprasius (2), St., presbyter at Lérins
- Capreolus
- Caracalla
- Caritas
- Carpocrates
- Cassianus (2) Julius
- Cassianus (6), bishop of Autun
- Cassianus (11) Johannes
- Cassiodorus (or rather, Cassiodorius) Magnus Aurelius
- Catharine (Catharina, Catherine, etc.), St.
- Caulacau
- Celsus (1)
- Cerdo (1)
- Cerinthus
- Christopher, St.
- Chromatius, bishop of Aquileia
- Chrysippus
- Chrysogonus (1), martyr
- Chrysologus, Petrus
- Chrysostom, John
- Claudius (1), emperor
- Clemens (1), Flavius
- Clemens Romanus
- Clement of Alexandria
- Clementine Literature
- Cletus or Anacletus
- Clovis
- Coelestinus, commonly called Celestine
- Coelestius
- Coelicolae
- Colluthus (2), presbyter and sect founder
- Collyridians
- Columba (1) Columcille
- Columbanus, abbat of Luxeuil and Bobbio
- Comgall
- Commodianus
- Commodus
- Constans I.
- Constantinus I.
- Constantinus II., eldest son of Constantine the Great
- Constantius I. Flavius Valerius, surnamed Chlorus
- Constantius II., son of Constantius the Great
- Cornelius (2), bishop of Rome
- Cosmas (1) and Damianus
- Cosmas (3), surnamed Indicopleustes
- Cyprianus (1) Thascius Caecilius
- Cyra
- Cyriacus (19), patriarch of Constantinople
- Cyrillus (2), bishop of Jerusalem
- Cyrillus (7), St., archbishop of Alexandria
- Cyrillus (13), of Scythopolis