| Name | Position | Party | Constituency |
|---|---|---|---|
| Pippa Hackett | Senator | Green Party | Agricultural Panel |
| Mark Hackett | Councillor | Green Party | Edenderry |
| Gerry Hagan | Councillor | Unknown | Longford |
| Michelle Hall | Councillor | Unknown | Drogheda Rural |
| Lorraine Hall | Councillor | Unknown | Dún Laoghaire |
| John Halligan | Former Representative | Independent | |
| Melisa Halpin | Councillor | People Before Profit | Dún Laoghaire |
| Sinéad Halpin | Former Representative | Social Democrats | |
| Peter Hamilton | Councillor | Green Party | Maynooth |
| Seamus Hanafin | Councillor | Fianna Fáil | Thurles |
| Mary Hanafin | Councillor | Fianna Fáil | Blackrock |
| Breda Hanaphy | Councillor | Unknown | Blanchardstown - Mulhuddart |
| Pat Hand | Former Representative | Fine Gael | |
| Paul Hand | Former Representative | Independent | |
| Paul Hanley | Former Representative | The National Party | |
| Owen Hanley | Councillor | Social Democrats | Galway City East |
| Mary Hannah Hourigan | Councillor | Fine Gael | Cashel-Tipperary |
| Dominic Hannigan | Former Representative | Labour | |
| Joe Hannigan | Councillor | Independent | Nenagh |
| Blaise Hanningan | Former Representative | Independent | |
| Conor Hannon | Former Representative | Aontú | |
| Wayne Harding | Councillor | Fianna Fáil | Laytown-Bettystown |
| Marian Harkin | TD | Independent | Sligo-Leitrim |
| Martin Harley | Councillor | Fine Gael | Lifford-Stranorlar |
| Laura Harmon | Former Representative | Independent | |
| Noel Harrington | Former Representative | Fine Gael | |
| Simon Harris | TD | Fine Gael | Wicklow |
| Joe Harris | Former Representative | Independent | |
| Rita Harrold | Former Representative | Solidarity | |
| Paddy Harte Jr | Former Representative | Fine Gael |