| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| An Machaire | city | Donegal | Ireland | 54.93 | -8.44 | 206 | 450 |
| An Machaire | city | Donegal | Ireland | 54.76 | -8.53 | 396 | 353 |
| An Machaire Beag | city | Donegal | Ireland | 54.97 | -7.61 | 341 | 2631 |
| An Machaire Mór | city | Galway | Ireland | 53.41 | -9.30 | 187 | 1994 |
| An Mam | city | Galway | Ireland | 53.52 | -9.57 | 157 | 301 |
| An Mam Thiar | city | Galway | Ireland | 53.52 | -9.57 | 157 | 301 |
| An Mam Thoir | city | Galway | Ireland | 53.52 | -9.57 | 157 | 301 |
| An Meall Mór | city | Donegal | Ireland | 55.24 | -7.80 | 0 | 704 |
| An Mhaigh | city | Galway | Ireland | 53.12 | -8.96 | 101 | 1462 |
| An Mhaigh | city | Monaghan | Ireland | 54.40 | -6.98 | 147 | 3294 |
| An Mhaighean | city | Roscommon | Ireland | 53.85 | -8.53 | 252 | 1556 |
| An Mhaighean | city | Mayo | Ireland | 54.20 | -9.19 | 3 | 1163 |
| An Mhainistir | city | Galway | Ireland | 53.10 | -8.39 | 229 | 1338 |
| An Mhaoil Gharbh | city | Wexford | Ireland | 52.46 | -6.80 | 830 | 1770 |
| An Mhaoilinn | city | Mayo | Ireland | 53.94 | -10.02 | 249 | 986 |
| An Mhaothail | city | Kilkenny | Ireland | 52.73 | -7.26 | 331 | 2463 |
| An Mhin Mhor | city | Donegal | Ireland | 54.96 | -8.39 | 0 | 2629 |
| An Mhoin Bhreac | city | Ireland | 52.04 | -7.61 | 321 | 3646 | |
| An Mhoing Mhor | city | Mayo | Ireland | 54.16 | -9.90 | 124 | 931 |
| An Mhuinchille | city | Lu | Ireland | 54.03 | -6.49 | 137 | 6138 |
| An Mhuineach | city | Donegal | Ireland | 55.19 | -7.53 | 0 | 728 |
| An Mhuirioch | city | Kerry | Ireland | 52.19 | -10.36 | 59 | 1171 |
| An Mhéalach Mhór | city | Kilkenny | Ireland | 52.44 | -7.41 | 357 | 1248 |
| An Mhóin Bhuí | city | Laois | Ireland | 52.83 | -7.07 | 967 | 1751 |
| An Mhóin Mhín | city | Kilkenny | Ireland | 52.24 | -7.22 | 85 | 3878 |
| An Mhóin Mhór | city | Wexford | Ireland | 52.40 | -6.51 | 42 | 3260 |
| An Mointeach | city | Galway | Ireland | 53.35 | -8.97 | 29 | 5868 |
| An Mongán | city | Laois | Ireland | 52.47 | -6.95 | 314 | 2056 |
| An Muileann Beag | city | Lu | Ireland | 53.98 | -6.44 | 45 | 28750 |
| An Muileann Iarainn | city | Cavan | Ireland | 54.19 | -7.70 | 246 | 1554 |
| An Muileann gCearr | city | An Iarmhi | Ireland | 53.53 | -7.35 | 367 | 16767 |
| An Muirneach Beag | city | Cork | Ireland | 51.93 | -9.19 | 830 | 1004 |
| An Mullach | city | Cavan | Ireland | 53.81 | -6.95 | 416 | 2211 |
| An Mullach Buí | city | Meath | Ireland | 53.65 | -6.71 | 164 | 16785 |
| An Mullach Buí | city | Leitrim | Ireland | 54.01 | -7.97 | 209 | 1283 |
| An Mullach Garbh | city | Leitrim | Ireland | 54.08 | -7.94 | 830 | 637 |
| An Mullach Mór | city | Sligo | Ireland | 54.47 | -8.45 | 0 | 1001 |
| An Mullach Rua | city | Mayo | Ireland | 54.14 | -10.09 | 0 | 737 |
| An Mullán Mór | city | Donegal | Ireland | 54.79 | -8.24 | 360 | 863 |
| An Mullán Odhar | city | Wexford | Ireland | 52.31 | -6.54 | 311 | 7808 |
| An Más | city | Galway | Ireland | 53.39 | -9.02 | 95 | 2970 |
| An Méirse Theas | city | Lu | Ireland | 54.00 | -6.35 | 0 | 16154 |
| An Móinín | city | Roscommon | Ireland | 53.67 | -8.05 | 203 | 1382 |
| An Móinín Rua | city | Kilkenny | Ireland | 52.83 | -7.19 | 830 | 3756 |
| An Móinín Thoir | city | Galway | Ireland | 53.16 | -8.74 | 193 | 1632 |
| An Móta | city | An Iarmhi | Ireland | 53.39 | -7.72 | 249 | 3102 |