| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 261 | Bromius | Latin | God of wine. | M | |
| 262 | Brutus | Latin | Stupid. | M | |
| 263 | Bucer | Latin | Horned. | M | |
| 264 | Cacue | Latin | Son of Vukan. | M | |
| 265 | Cadmus | Latin | Son of Abenor. | M | |
| 266 | Caecelius | Latin | Blind. | M | |
| 267 | Caesar | Latin | The family name of Roman dictator Gaius Julias Caesar. Its origin is uncertain:, but may come from 'caesaries' meaning hair, or 'caesius' meaning 'bluish-grey, or 'caedere' meaning to cut, perhaps referring to his birth by Caesarean section. | M | |
| 268 | Caezar | Latin | Variant of Caesar: Hairy. | M | |
| 269 | Caits | Latin | Variant of Gaius: To rejoice. Famous bearer: Roman dictator Gaius Julius Caesar. | M | |
| 270 | Cajetan | Latin | Rejoiced. | M | |
| 271 | Calais | Latin | Son of the north wind. | M | |
| 272 | Calchas | Latin | A prophet. | M | |
| 273 | Caligula | Latin | Name given to Gaius Ceasar when he was a child. | M | |
| 274 | Calix | Latin | Chalice. | M | |
| 275 | Calleo | Latin | Knowing. | M | |
| 276 | Callimaehlls | Latin | Name of a poet. | M | |
| 277 | Callixtus | Latin | Chalice. | M | |
| 278 | Callosus | Latin | Callous. | M | |
| 279 | Calvin | Latin | Bald. The Roman family clan Calvin. | M | |
| 280 | Calvinus | Latin | Bald. | M | |