| Name | Position | Party | Constituency |
|---|---|---|---|
| John Campbell | Councillor | Independent | Donegal |
| Aidan Campbell | Councillor | Fine Gael | Carrickmacross-Castleblayney |
| Seán Canney | TD | Independent | Galway East |
| Ivan Canning | Councillor | Fianna Fáil | Loughrea |
| Paul Canning | Councillor | Fianna Fáil | Inishowen |
| Ross Cannon | Former Representative | Independent | |
| Ciaran Cannon | TD | Fine Gael | Galway East |
| Derry Canty | Councillor | Fine Gael | Ballincollig-Carrigaline |
| Catherine Carey | Councillor | Sinn Féin | Clonmel |
| John Carey | Councillor | Fine Gael | Waterford City East |
| Joe Carey | TD | Fine Gael | Clare |
| Cathleen Carney-Boud | Councillor | Sinn Féin | Ballymun |
| Brendan Carr | Councillor | Labour | Cabra-Finglas |
| Micheál Carrigy | Councillor | Fine Gael | Granard |
| John Carroll | Councillor | Fianna Fáil | Nenagh |
| John Carroll | Councillor | Independent | Birr |
| Joe Carroll | Councillor | Fianna Fáil | West Cork |
| Matt Carthy | MEP | Sinn Féin | Midlands-North-West |
| Ger Carthy | Councillor | Independent | Wexford |
| Colm Carthy | Councillor | Sinn Féin | Carrickmacross-Castleblayney |
| Pat Casey | TD | Fianna Fáil | Wicklow |
| Mark Casey | Councillor | Independent | Ballymahon |
| Shane Cassells | TD | Fianna Fáil | Meath West |
| Marie Casserly | Councillor | Independent | Sligo |
| Vicki Casserly | Councillor | Fine Gael | Lucan |
| Eugene Cassidy | Councillor | Fine Gael | Kells |
| Alan Anthony Cassidy | Councillor | Sinn Féin | Drogheda |
| John Cassin | Councillor | Sinn Féin | Carlow |
| John Caulfield | Councillor | Fianna Fáil | Claremorris |
| Mary Cavanagh | Councillor | Fine Gael | Castlecomer |