| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 201 | Colmcilla | Irish | Dove of the church. | F | |
| 202 | Comyna | Irish | Shrewd. | F | |
| 203 | Concepta | Irish | Refers to the Immaculate Conception. | F | |
| 204 | Conchobara | Irish | Feminine form of Connor: strong willed. | F | |
| 205 | Conchobarra | Irish | Feminine form of Connor: strong willed. | F | |
| 206 | Conchobarre | Irish | Feminine form of Connor: strong willed. | F | |
| 207 | Congalie | Irish | Constant. | F | |
| 208 | Connal | Irish | Constant. | F | |
| 209 | Coreen | Irish | Maiden. | F | |
| 210 | Coreene | Irish | Maiden. | F | |
| 211 | Coretta | Irish | Variant of Cory meaning variously: from the round hill; seething pool; ravine. | F | |
| 212 | Corey | Irish | Variant of Cory meaning variously: from the round hill; seething pool; ravine. | F | |
| 213 | Cori | Irish | Variant of Cory meaning variously: from the round hill; seething pool; ravine. | F | |
| 214 | Coriann | Irish | Variant of Cory meaning variously: from the round hill; seething pool; ravine. | F | |
| 215 | Corianne | Irish | Variant of Cory meaning variously: from the round hill; seething pool; ravine. | F | |
| 216 | Corie | Irish | Variant of Cory meaning variously: from the round hill; seething pool; ravine. | F | |
| 217 | Corisa | Irish | Variant of Cory meaning variously: from the round hill; seething pool; ravine. | F | |
| 218 | Cornelia | Irish | Feminine form of Cornelius: Strong willed or wise. Cornelius is sometimes used as a translation of the name Conchubhar meaning High Desire. | F | |
| 219 | Correen | Irish | Maiden. | F | |
| 220 | Correena | Irish | Maiden. | F | |