| Name | Position | Party | Constituency |
|---|---|---|---|
| Teresa McGuire | Former Representative | Fine Gael | |
| Ray McHugh | Former Representative | Sinn Féin | |
| Saoirse McHugh | Former Representative | Green Party | |
| Joe McHugh | TD | Fine Gael | Donegal |
| Tom McHugh | Former Representative | Fine Gael | |
| Karey McHugh | Councillor | Independent | Tuam |
| Rita McInerney | Former Representative | Fianna Fáil | |
| Sandra McIntyre | Former Representative | Fine Gael | |
| Cormac McKay | Former Representative | Direct Democracy Ireland - National Citizens Movement | |
| Stephen McKee | Councillor | Fianna Fáil | Laytown-Bettystown |
| Patrick McKee | Former Representative | Fianna Fáil | |
| Mike McKee | Councillor | Sinn Féin | Shannon |
| Holly McKeever Cairns | TD | Social Democrats | Cork South-West |
| Tommy McKeigue | Former Representative | Fine Gael | |
| Brian McKenna | Councillor | Sinn Féin | Monaghan |
| Ronan McKenna | Former Representative | Fianna Fáil | |
| Andrea McKevitt | Councillor | Fianna Fáil | Dundalk Carlingford |
| Carron McKinney | Former Representative | Labour | |
| Alastair McKinstry | Councillor | Green Party | Conamara South |
| Sandra McLellan | Former Representative | Sinn Féin | |
| Tony McLoughlin | Former Representative | Fine Gael | |
| Gráinne McLoughlin | Former Representative | Fine Gael | |
| Louise McLoughlin | Former Representative | Fine Gael | |
| Martin McLoughlin | Councillor | Fianna Fáil | Castlebar |
| Sean McLoughlin | Councillor | Unknown | Dundrum |
| Fiona McLoughlin-Healy | Councillor | Independent | Newbridge |
| Michael McMahon | Councillor | Sinn Féin | Donegal |
| Conor McMahon | Former Representative | Fine Gael | |
| Pat McMahon | Councillor | Fianna Fáil | Shannon |
| Ronan McMahon | Councillor | Renua Ireland | Rathfarnham Templeogue |