| Name | Position | Party | Constituency |
|---|---|---|---|
| Des Cahill | Councillor | Fine Gael | Cork City South-East |
| Michael Cahill | Councillor | Independent | Kenmare |
| Jackie Cahill | TD | Fianna Fáil | Tipperary |
| Mick Cahill | Councillor | Fianna Fáil | Ballymahon |
| Richard Cahill | Former Representative | Independent | |
| Maíria Cahill | Former Representative | Labour | |
| Dolores Cahill | Former Representative | Irish Freedom Party | |
| Mary Cahillane | Former Representative | Solidarity | |
| Bernard Caldwell | Councillor | Independent | Leixlip |
| Mícheál Callaghan | Former Representative | Green Party | |
| Mary Callaghan | Councillor | Social Democrats | Ballymun - Finglas |
| Willie Callaghan | Former Representative | Fianna Fáil | |
| Liam Callaghan | Councillor | Unknown | Boyle |
| Deborah Callaghan | Former Representative | Fianna Fáil | |
| Kevin Callan | Councillor | Fine Gael | Drogheda Urban |
| Dara Calleary | TD | Fianna Fáil | Mayo |
| Billy Cameron | Former Representative | Labour | |
| Anne Campbell | Former Representative | Sinn Féin | |
| John Campbell | Former Representative | Independent | |
| Aidan Campbell | Councillor | Fine Gael | Carrickmacross-Castleblayney |
| Seán Canney | TD | Independent | Galway East |
| Ivan Canning | Councillor | Fianna Fáil | Loughrea |
| Paul Canning | Councillor | Fianna Fáil | Buncrana |
| Ross Cannon | Former Representative | Independent | |
| Ciaran Cannon | TD | Fine Gael | Galway East |
| Derry Canty | Councillor | Fine Gael | Cork City South West |
| Catherine Carey | Former Representative | Sinn Féin | |
| John Carey | Former Representative | Fine Gael | |
| William Carey | Councillor | Sinn Féin | Clondalkin |
| PJ Carey | Councillor | Unknown | Cappamore-Kilmallock |