| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Mahoonagh | city | County Limerick | Ireland | 52.4297222 | -9.0116667 | 213 | 5486 |
| Mainistir na Feile | city | County Limerick | Ireland | 52.3813889 | -9.3025 | 419 | 4258 |
| Mainistir na Féile | city | County Limerick | Ireland | 52.3813889 | -9.3025 | 419 | 4258 |
| Mantlehill | city | County Limerick | Ireland | 52.6272222 | -8.9888889 | 6 | 4457 |
| Massy's Bridge | city | County Limerick | Ireland | 52.6275 | -8.7511111 | 42 | 4758 |
| Massyʼs Bridge | city | County Limerick | Ireland | 52.6275 | -8.7511111 | 42 | 4758 |
| Meanus | city | County Limerick | Ireland | 52.5111111 | -8.6097222 | 242 | 5475 |
| Meelick Bridge | city | County Limerick | Ireland | 52.6863889 | -8.6686111 | 3 | 3779 |
| Meenkilly | city | County Limerick | Ireland | 52.3411111 | -9.2644444 | 482 | 4594 |
| Milltown Bridge | city | County Limerick | Ireland | 52.525 | -8.8530556 | 121 | 5475 |
| Moanabricka | city | County Limerick | Ireland | 52.3780556 | -8.8138889 | 337 | 5391 |
| Monaster | city | County Limerick | Ireland | 52.5208333 | -8.6719444 | 160 | 5475 |
| Montpelic | city | County Limerick | Ireland | 52.7505556 | -8.4938889 | 170 | 2858 |
| Moroe | city | County Limerick | Ireland | 52.6511111 | -8.3961111 | 246 | 5058 |
| Mungairit | city | County Limerick | Ireland | 52.6358333 | -8.6966667 | 26 | 4897 |
| Mungret | city | County Limerick | Ireland | 52.6358333 | -8.6966667 | 26 | 4897 |
| Murrins Cross Roads | city | County Limerick | Ireland | 52.355 | -8.4847222 | 538 | 5495 |
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