| Name | Position | Party | Constituency |
|---|---|---|---|
| Michael Mulligan | Councillor | Sinn Féin | Boyle |
| Eddie Mulligan | Councillor | Independent | Waterford City East |
| Sarah Louise Mulligan | Former Representative | Independent | |
| Dean Mulligan | Councillor | Independents 4 Change | Swords |
| Michael Mullins | Former Representative | Fine Gael | |
| Aidan Mullins | Councillor | Sinn Féin | Graiguecullen-Portarlington |
| Michael Mullooly | Former Representative | Fianna Fáil | |
| Brendan Mulroy | Councillor | Fianna Fáil | Westport |
| Bernard Mulvany | Former Representative | People Before Profit | |
| Caroline Mulvey | Former Representative | Sinn Féin | |
| Dara Mulvey | Councillor | Fine Gael | Ballymote-Tubbercurry |
| Paul Mulville | Councillor | Social Democrats | Rush - Lusk |
| Jarlath Munnelly | Councillor | Fine Gael | Ballina |
| Imelda Munster | TD | Sinn Féin | Louth |
| Ken Murnane | Councillor | Fianna Fáil | Carlow |
| Jennifer Murnane O'Connor | TD | Fianna Fáil | Carlow-Kilkenny |
| Charlie Murphy | Councillor | Independent | Tullow |
| Bart Murphy | Former Representative | Independent | |
| PJ Murphy | Councillor | Unknown | Gort-Kinvara |
| Miriam Murphy | Councillor | Independent | Arklow |
| Ray Murphy | Former Representative | Fianna Fáil | |
| Barbara-Anne Murphy | Councillor | Fianna Fáil | Enniscorthy |
| Bridín Murphy | Councillor | Fine Gael | New Ross |
| Jason Murphy | Councillor | Fianna Fáil | Waterford City South |
| Cleo Murphy | Former Representative | Green Party | |
| Tony Murphy | Councillor | Independent | Balbriggan |
| Brian Murphy | Former Representative | Fine Gael | |
| Emma Murphy | Former Representative | Sinn Féin | |
| Mick Murphy | Former Representative | Solidarity | |
| Eugene Murphy | Senator | Fianna Fáil | Agricultural Panel |