- Caelius Aurelianus → Soranus
- Callimachus of Cyrene → Paradoxographoi
- Callinus → Lyrici Graeci
- Callisthenes → Alexander Romance (Pseudo-Callisthenes/Callisthenes)
- Capella → Martianus Capella
- Cassiodorus, Flavius Magnus Aurelius → Socrates of Constantinople; → Sozomenus, Salminius Hermias (Sozomen)
- Cassius Longinus → Rhetores Graeci
- Chaeremon → Tragici Graeci
- Chrysostom/-os/-us → Dion Cocceianus of Prusa (Dio Chrysostom); → Iohannes Chrysostomos (John Chrysostom)
- Claudius Aelianus → Aelianus, Claudius
- Claudius Claudianus → Claudianus, Claudius
- Claudius Ptolemaeus…