| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Moufin | city | Wexford | Ireland | 52.48 | -6.58 | 170 | 10810 |
| Mount Bellew | city | Galway | Ireland | 53.47 | -8.50 | 246 | 1732 |
| Mount Bellew Bridge | city | Galway | Ireland | 53.47 | -8.50 | 246 | 1732 |
| Mount Beresford | city | Ireland | 52.20 | -7.04 | 226 | 11224 | |
| Mount Bolton | city | Ireland | 52.32 | -7.32 | 190 | 3276 | |
| Mount Briscoe | city | Offaly | Ireland | 53.31 | -7.26 | 331 | 1880 |
| Mount Bruis | city | Ireland | 52.45 | -8.24 | 830 | 1816 | |
| Mount Catherine | city | Clare | Ireland | 52.71 | -8.58 | 85 | 26293 |
| Mount Druid | city | Ireland | 52.23 | -7.04 | 154 | 13785 | |
| Mount Emla | city | Cork | Ireland | 51.86 | -8.43 | 298 | 66269 |
| Mount Florence | city | Roscommon | Ireland | 53.38 | -7.97 | 252 | 11565 |
| Mount Garrett Bridge | city | Kilkenny | Ireland | 52.42 | -6.93 | 124 | 8684 |
| Mount George | city | Wexford | Ireland | 52.58 | -6.42 | 249 | 1773 |
| Mount Ida | city | Kilkenny | Ireland | 52.32 | -7.00 | 29 | 2735 |
| Mount Keefe | city | Cork | Ireland | 52.23 | -8.98 | 830 | 2607 |
| Mount Keeffe | city | Cork | Ireland | 52.23 | -8.98 | 830 | 2607 |
| Mount Kennedy | city | Ireland | 52.16 | -7.55 | 830 | 1447 | |
| Mount Levers | city | Clare | Ireland | 52.75 | -8.76 | 262 | 3295 |
| Mount Mask | city | Offaly | Ireland | 53.03 | -7.87 | 311 | 1418 |
| Mount Massy | city | Cork | Ireland | 51.92 | -8.98 | 344 | 4084 |
| Mount Merrion | city | Dun Laoghaire-Rathdown | Ireland | 53.30 | -6.24 | 242 | 211571 |
| Mount Neill | city | Ireland | 52.90 | -6.67 | 830 | 3062 | |
| Mount Nugent | city | Cavan | Ireland | 53.82 | -7.25 | 255 | 2112 |
| Mount Pleasant | city | Kilkenny | Ireland | 52.80 | -7.58 | 830 | 2310 |
| Mount Rivers | city | Kerry | Ireland | 52.09 | -9.77 | 62 | 4683 |
| Mount Rivers | city | Cork | Ireland | 51.97 | -8.83 | 830 | 1401 |
| Mount Rivers | city | Cork | Ireland | 52.15 | -8.24 | 173 | 7378 |
| Mount Rivers | city | Ireland | 52.13 | -7.85 | 78 | 1807 | |
| Mount Saint Annagh | city | Kerry | Ireland | 52.24 | -9.75 | 364 | 15358 |
| Mount Slaney | city | Wicklow | Ireland | 52.98 | -6.64 | 830 | 1503 |
| Mount Talbot | city | Ireland | 53.53 | -8.28 | 226 | 1359 | |
| Mount Uniacke | city | Cork | Ireland | 51.98 | -8.00 | 305 | 1652 |
| Mount William | city | Ireland | 52.51 | -8.08 | 285 | 1752 | |
| Mountain House | city | Cavan | Ireland | 53.98 | -7.11 | 830 | 1512 |
| Mountain Lodge | city | Cavan | Ireland | 53.98 | -7.11 | 830 | 1512 |
| Mountainpole | city | Meath | Ireland | 53.75 | -6.89 | 249 | 8598 |
| Mountallen | city | Roscommon | Ireland | 54.07 | -8.10 | 249 | 1360 |
| Mountbellew | city | Galway | Ireland | 53.47 | -8.50 | 246 | 1732 |
| Mountblakeney | city | Ireland | 52.38 | -8.65 | 229 | 4422 | |
| Mountbolus | city | Offaly | Ireland | 53.19 | -7.62 | 285 | 1141 |
| Mountcatherine | city | Cork | Ireland | 52.04 | -8.36 | 406 | 1506 |
| Mountcharles | city | Donegal | Ireland | 54.65 | -8.20 | 19 | 1579 |
| Mountcoal | city | Kerry | Ireland | 52.39 | -9.52 | 830 | 3309 |
| Mountcollins | city | Ireland | 52.32 | -9.23 | 830 | 1630 | |
| Mounthoward Cross Roads | city | Wexford | Ireland | 52.58 | -6.37 | 249 | 1911 |
| Mounthussey | city | Roscommon | Ireland | 53.39 | -8.02 | 830 | 2983 |
| Mountjoy | city | Dublin | Ireland | 53.35 | -6.25 | 3 | 323264 |
| Mountjoy Ward | city | Dublin | Ireland | 53.35 | -6.25 | 3 | 323264 |
| Mountkelly | city | Carlow | Ireland | 52.90 | -6.66 | 830 | 2578 |
| Mountmellick | city | Laois | Ireland | 53.11 | -7.32 | 351 | 5095 |
| Mountmerrion or Callary | city | Dun Laoghaire-Rathdown | Ireland | 53.30 | -6.24 | 242 | 211571 |
| Mountnagle | city | Cork | Ireland | 52.16 | -8.61 | 249 | 8982 |
| Mountpatrick | city | Ireland | 52.18 | -7.39 | 196 | 2050 | |
| Mountrath | city | Laois | Ireland | 53.00 | -7.47 | 374 | 2778 |
| Mountrivers Bridge | city | Clare | Ireland | 52.74 | -9.49 | 91 | 1134 |
| Mountshannon | city | Clare | Ireland | 52.93 | -8.43 | 180 | 877 |
| Mountstuart | city | Ireland | 52.06 | -7.77 | 830 | 993 | |
| Mounvarrin | city | Ireland | 52.54 | -7.58 | 830 | 1531 |