| Name | Position | Party | Constituency |
|---|---|---|---|
| Mary Cavanagh | Councillor | Fine Gael | Castlecomer |
| Daniel Céitinn | Councillor | Sinn Féin | South East Inner City |
| Bill Chambers | Councillor | Fianna Fáil | Kilrush |
| Jack Chambers | TD | Fianna Fáil | Dublin West |
| Lisa Chambers | Senator | Fianna Fáil | Cultural and Educational Panel |
| James Charity | Councillor | Independent | Athenry-Oranmore |
| Alan Cheevers | Councillor | Unknown | Galway City East |
| Nessa Childers | Former Representative | Independent | |
| Hazel Chu | Councillor | Green Party | Pembroke |
| Clare Claffey | Councillor | Social Democrats | Birr |
| Aine Clancy | Former Representative | Labour | |
| TJ Clare | Former Representative | Independent | |
| Michael Clark | Councillor | Unknown | Killiney-Shankill |
| Sorca Clarke | TD | Sinn Féin | Longford-Westmeath |
| Michael Clarke | Councillor | Independent | Ballymote-Tubbercurry |
| Paul Clarke | Former Representative | Independent | |
| Bill Clear | Councillor | Social Democrats | Naas |
| Ronan Cleary | Former Representative | Aontú | |
| Peter Cleere | Councillor | Fianna Fáil | Callan-Thomastown |
| John Clendennen | Councillor | Fine Gael | Birr |
| Shane Clifford | Former Representative | Fianna Fáil | |
| Lorraine Clifford-Lee | Senator | Fianna Fáil | Taoiseach's Nominee |
| Patrick Clohessy | Former Representative | Independent | |
| Thomas Clonan | Former Representative | Independent | |
| Ollie Clooney | Councillor | Unknown | Borris in Ossory-Mountmellick |
| Deirdre Clune | MEP | Fine Gael | South |
| Declan Clune | Councillor | Sinn Féin | Portlaw-Kilmacthomas |
| Karen Coakley | Councillor | Fine Gael | Skibbereen-West Cork |
| Jim Codd | Councillor | Aontú | Rosslare |
| Kathleen Codd-Nolan | Councillor | Fine Gael | Enniscorthy |