| Ciofius Antonius |
| Cipriotti Giacomo |
| Cironius Innocentius I |
| Cittadini Celso |
| Cixilla sive Cixilianes |
| Clajus M. Joannes |
| Claramontius (Ital. Chiaramonti) Scipio |
| Clarius Isidorus |
| Claro [de] Franciscus |
| Claude Jean |
| Clauderus Gabriel |
| Claudianus Ecdicius Mamertus |
| Claudius |
| Claverius Stephanus |
| Clavius Christophorus |
| Cleanthes |
| Clemens [S.] I |
| Clemens [S.] |
| Clemens IV |
| Clemens V |
| Clemens VI |
| Clemens VIII |
| Clemens VIII |
| Clemens X |
| Clemens XI |
