| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Magheracloone | city | County Monaghan | Ireland | 53.9388889 | -6.7855556 | 206 | 3505 |
| Magherarny Cross Roads | city | County Monaghan | Ireland | 54.2155556 | -7.1122222 | 249 | 3439 |
| Magherashaghry | city | County Monaghan | Ireland | 54.1011111 | -7.1758333 | 252 | 3086 |
| Magheross | city | County Monaghan | Ireland | 53.9727778 | -6.7188889 | 262 | 3503 |
| Magoney Bridge | city | County Monaghan | Ireland | 54.0261111 | -6.6144444 | 252 | 6161 |
| McNally's Cross Roads | city | County Monaghan | Ireland | 54.1486111 | -6.845 | 475 | 3487 |
| McNallyʼs Cross Roads | city | County Monaghan | Ireland | 54.1486111 | -6.845 | 475 | 3487 |
| Mill Town | city | County Monaghan | Ireland | 54.1366667 | -6.6913889 | 462 | 4401 |
| Monaghan | city | County Monaghan | Ireland | 54.25 | -6.9666667 | 232 | 3480 |
| Monalia | city | County Monaghan | Ireland | 54.0286111 | -6.7275 | 324 | 3506 |
| Monneill | city | County Monaghan | Ireland | 54.1247222 | -7.033333 | 367 | 3200 |
| Moy | city | County Monaghan | Ireland | 54.4005556 | -6.9755556 | 147 | 4264 |
| Moy Bridge | city | County Monaghan | Ireland | 54.4005556 | -6.9755556 | 147 | 4264 |
| Moyle | city | County Monaghan | Ireland | 54.0825 | -6.9561111 | 495 | 3262 |
| Moylemuck | city | County Monaghan | Ireland | 54.0802778 | -7.083333 | 275 | 2681 |
| Moyles | city | County Monaghan | Ireland | 54.2308333 | -6.9144444 | 436 | 3602 |
| Moyles | city | County Monaghan | Ireland | 54.077778 | -6.6011111 | 377 | 6915 |
| Muineachan | city | County Monaghan | Ireland | 54.25 | -6.9666667 | 232 | 3480 |
| Muineachán | city | County Monaghan | Ireland | 54.25 | -6.9666667 | 232 | 3480 |
| Mullaloughan | city | County Monaghan | Ireland | 54.2891667 | -6.9347222 | 232 | 3483 |
| Mullan | city | County Monaghan | Ireland | 54.3630556 | -6.9202778 | 209 | 3969 |
| Mullanacross | city | County Monaghan | Ireland | 54.3880556 | -6.9841667 | 180 | 4264 |
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