| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 281 | Colla | Irish | An ancient Irish name whos meaning is lost in antiquety. | M | |
| 282 | Collin | Irish | Virile. | M | |
| 283 | Collins | Irish | Holly. | M | |
| 284 | Colm | Irish | Variant of Columba, a Latin name meaning dove. | M | |
| 285 | Colman | Irish | Dove. | M | |
| 286 | Colmcille | Irish | Dove of the church. | M | |
| 287 | Colquhoun | Irish | Variant of Calhoun: Small forest. | M | |
| 288 | Colum | Irish | Variant of Columba, a Latin name meaning dove. | M | |
| 289 | Columba | Irish | Variant of Colm: Dove. | M | |
| 290 | Columbo | Irish | Dove. | M | |
| 291 | Coman | Irish | Bent. | M | |
| 292 | Comdhan | Irish | Variant of Comhghan: Twin. | M | |
| 293 | Comhghall | Irish | Hostage. | M | |
| 294 | Comhghan | Irish | Twin. | M | |
| 295 | Comyn | Irish | Shrewd. | M | |
| 296 | Con | Irish | Diminutive of Conlan: Hero. | M | |
| 297 | Conaire | Irish | Wise or red. | M | |
| 298 | Conal | Irish | High and mighty. | M | |
| 299 | Conall | Irish | High and mighty. | M | |
| 300 | Conan | Irish | Hound; elevated. Famous bearer: Talk show host Conan O'Brien. | M | |