| Name | Position | Party | Constituency |
|---|---|---|---|
| Maeve Cox | Former Representative | Independent | |
| Gerry Coyle | Councillor | Fine Gael | Belmullet |
| Seamus Coyle | Councillor | Fianna Fáil | Ballybay-Clones |
| Donal Coyle | Councillor | Fianna Fáil | Letterkenny |
| Liam Coyne | Former Representative | Social Democrats | |
| Gerard Craughwell | Senator | Independent | Labour Panel |
| Gerry Crawford | Councillor | Fianna Fáil | Lifford-Stranorlar |
| Susan Crawford | Councillor | Green Party | Ennistimon |
| Mags Crean | Councillor | Unknown | Greystones |
| Michael Creaton | Former Representative | Fine Gael | |
| Conor Creaven | Former Representative | Independent | |
| Michael Creed | TD | Fine Gael | Cork North-West |
| Michael Creed | Councillor | Fine Gael | Macroom |
| Lucinda Creighton | Former Representative | Renua Ireland | |
| Con Cremin | Former Representative | Independent | |
| Henry Cremin | Councillor | Sinn Féin | Cork City South-West |
| Noel Cribbin | Councillor | Fine Gael | Edenderry |
| John Cribbin | Councillor | Fine Gael | Claremorris |
| Ian Croft | Former Representative | Independent | |
| Frank Cronin | Former Representative | Renua Ireland | |
| Avril Cronin | Councillor | Fine Gael | Baltinglass |
| Tom Cronin | Councillor | Fianna Fáil | Dungarvan |
| Brendan Cronin | Councillor | Independent | Killarney |
| Réada Cronin | TD | Sinn Féin | Kildare North |
| Ted Cronin | Former Representative | Independent | |
| Gabriel Cronnelly | Councillor | Sinn Féin | Athenry-Oranmore |
| Tom Crosby | Councillor | Independent | Boyle |
| Terry Crossan | Councillor | Unknown | Buncrana |
| Nicholas Crossan | Councillor | Independent | Buncrana |
| John Crosse | Councillor | Fine Gael | Cashel-Tipperary |