| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Maghanknockane | city | Ciarrai | Ireland | 52.315 | -9.5794444 | 997 | 2413 |
| Maghanlawaun | city | Ciarrai | Ireland | 51.9713889 | -9.7775 | 905 | 2433 |
| Maigh Mheain | city | Ciarrai | Ireland | 52.5005556 | -9.3713889 | 239 | 3247 |
| Maigh Mheáin | city | Ciarrai | Ireland | 52.5005556 | -9.3713889 | 239 | 3247 |
| Maine Bridge | city | Ciarrai | Ireland | 52.1972222 | -9.5716667 | 219 | 2422 |
| Maingailaunlush | city | Ciarrai | Ireland | 52.3213889 | -9.5522222 | 820 | 2413 |
| Mainistir O d'Torna | city | Ciarrai | Ireland | 52.35 | -9.6833333 | 239 | 2412 |
| Mainistir Ó dʼTorna | city | Ciarrai | Ireland | 52.35 | -9.6833333 | 239 | 2412 |
| Mall | city | Ciarrai | Ireland | 52.1605556 | -10.0302778 | 269 | 1465 |
| Mangerton | city | Ciarrai | Ireland | 51.9355556 | -9.4575 | 324 | 2436 |
| Mastergeehy | city | Ciarrai | Ireland | 51.8858333 | -10.0961111 | 288 | 2436 |
| Maulin | city | Ciarrai | Ireland | 51.9058333 | -10.1325 | 616 | 2408 |
| Maulykeavane | city | Ciarrai | Ireland | 52.1066667 | -9.3513889 | 498 | 2426 |
| Meanus | city | Ciarrai | Ireland | 52.0863889 | -9.7483333 | 55 | 2426 |
| Meennahorna | city | Ciarrai | Ireland | 52.3738889 | -9.37 | 426 | 2927 |
| Mill Bridge | city | Ciarrai | Ireland | 52.0666667 | -9.5372222 | 223 | 2427 |
| Milltown | city | Ciarrai | Ireland | 52.1419444 | -10.2897222 | 0 | 1773 |
| Milltown | city | Ciarrai | Ireland | 52.15 | -9.7166667 | 236 | 2423 |
| Minard | city | Ciarrai | Ireland | 52.1227778 | -10.1402778 | 85 | 878 |
| Moneycashen | city | Ciarrai | Ireland | 52.4825 | -9.6805556 | 91 | 1671 |
| Moneyduff | city | Ciarrai | Ireland | 51.9569444 | -10.2108333 | 206 | 2015 |
| Montnagee | city | Ciarrai | Ireland | 52.35 | -9.6833333 | 239 | 2412 |
| Moorestown | city | Ciarrai | Ireland | 52.2191667 | -10.3411111 | 301 | 1007 |
| Morley's Bridge | city | Ciarrai | Ireland | 51.9211111 | -9.3861111 | 515 | 2436 |
| Morleyʼs Bridge | city | Ciarrai | Ireland | 51.9211111 | -9.3861111 | 515 | 2436 |
| Mount Rivers | city | Ciarrai | Ireland | 52.0861111 | -9.7675 | 62 | 2316 |
| Mount Saint Annagh | city | Ciarrai | Ireland | 52.2427778 | -9.7525 | 364 | 2128 |
| Mountcoal | city | Ciarrai | Ireland | 52.3941667 | -9.5163889 | 492 | 2409 |
| Muing | city | Ciarrai | Ireland | 52.2816667 | -9.6808333 | 200 | 2410 |
| Murirrigane | city | Ciarrai | Ireland | 52.2769444 | -10.1686111 | 0 | 1222 |
| Murreagh | city | Ciarrai | Ireland | 52.1869444 | -10.3638889 | 59 | 1756 |
| Mweennalaa | city | Ciarrai | Ireland | 52.2566667 | -9.5397222 | 265 | 2416 |
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