| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Maas | city | County Donegal | Ireland | 54.8319444 | -8.3611111 | 78 | 2240 |
| Maas Lower | city | County Donegal | Ireland | 54.8333333 | -8.3666667 | 39 | 2240 |
| Maas Upper | city | County Donegal | Ireland | 54.8333333 | -8.35 | 157 | 2240 |
| Magh | city | County Donegal | Ireland | 55.0666667 | -7.2666667 | 3 | 10496 |
| Maghera | city | County Donegal | Ireland | 54.7625 | -8.5252778 | 396 | 1583 |
| Magherabane | city | County Donegal | Ireland | 55.2055556 | -7.5172222 | 433 | 1282 |
| Magherabeg | city | County Donegal | Ireland | 54.9694444 | -7.6125 | 341 | 1855 |
| Magheraboy | city | County Donegal | Ireland | 54.7744444 | -7.6538889 | 328 | 2605 |
| Magheraboy | city | County Donegal | Ireland | 55.2113889 | -7.3938889 | 531 | 2256 |
| Magheradrumman | city | County Donegal | Ireland | 55.2497222 | -7.6644444 | 226 | 1514 |
| Magheralahan | city | County Donegal | Ireland | 55.1358333 | -7.2275 | 364 | 2006 |
| Magheramore | city | County Donegal | Ireland | 55.2583333 | -7.3588889 | 462 | 1898 |
| Maghery | city | County Donegal | Ireland | 54.9294444 | -8.4419444 | 206 | 882 |
| Mainear Ui Chuinneagain | city | County Donegal | Ireland | 54.95 | -7.6166667 | 295 | 2110 |
| Mainéar Uí Chuinneagáin | city | County Donegal | Ireland | 54.95 | -7.6166667 | 295 | 2110 |
| Malainn | city | County Donegal | Ireland | 55.3 | -7.2666667 | 101 | 1874 |
| Malin | city | County Donegal | Ireland | 55.3 | -7.2666667 | 101 | 1874 |
| Malin Beg | city | County Donegal | Ireland | 54.6686111 | -8.7847222 | 0 | 910 |
| Malin More | city | County Donegal | Ireland | 54.695 | -8.7736111 | 616 | 910 |
| Manner's Town | city | County Donegal | Ireland | 55.0213889 | -7.4044444 | 101 | 9590 |
| Mannerʼs Town | city | County Donegal | Ireland | 55.0213889 | -7.4044444 | 101 | 9590 |
| Manorcunningham | city | County Donegal | Ireland | 54.95 | -7.6166667 | 295 | 2110 |
| Marble Hill | city | County Donegal | Ireland | 55.1741667 | -7.9027778 | 3 | 970 |
| Masiness | city | County Donegal | Ireland | 55.1283333 | -7.9130556 | 124 | 1674 |
| Meananeary | city | County Donegal | Ireland | 54.7019444 | -8.6091667 | 262 | 2310 |
| Meenachallow | city | County Donegal | Ireland | 54.7833333 | -8.2716667 | 347 | 2318 |
| Meenaclady | city | County Donegal | Ireland | 55.1408333 | -8.2222222 | 111 | 1275 |
| Meenacross | city | County Donegal | Ireland | 54.7247222 | -8.6513889 | 849 | 1955 |
| Meenacross | city | County Donegal | Ireland | 54.9077778 | -8.3822222 | 0 | 1304 |
| Meenacung | city | County Donegal | Ireland | 55.0455556 | -8.1919444 | 209 | 2300 |
| Meenadeeny | city | County Donegal | Ireland | 54.8183333 | -8.2541667 | 439 | 2315 |
| Meenadreen | city | County Donegal | Ireland | 54.7194444 | -8.6638889 | 1072 | 1955 |
| Meenagolan | city | County Donegal | Ireland | 54.6938889 | -8.3461111 | 1371 | 2243 |
| Meenagolan | city | County Donegal | Ireland | 54.7338889 | -7.7455556 | 482 | 2822 |
| Meenanalbany | city | County Donegal | Ireland | 54.9786111 | -8.3805556 | 104 | 1623 |
| Meenasrona | city | County Donegal | Ireland | 54.8708333 | -7.9475 | 583 | 2314 |
| Meenasrona | city | County Donegal | Ireland | 54.7297222 | -7.7883333 | 465 | 2810 |
| Meenataggart | city | County Donegal | Ireland | 54.7202778 | -8.1241667 | 629 | 2321 |
| Meenatotan | city | County Donegal | Ireland | 54.9333333 | -8.2916667 | 364 | 2178 |
| Meenavean | city | County Donegal | Ireland | 54.6736111 | -8.6891667 | 1683 | 2087 |
| Meenaward | city | County Donegal | Ireland | 55.1883333 | -7.4188889 | 367 | 2209 |
| Meenawogary | city | County Donegal | Ireland | 54.7386111 | -7.7094444 | 521 | 2822 |
| Meencorwick | city | County Donegal | Ireland | 54.9844444 | -8.2419444 | 482 | 2307 |
| Meendarragh | city | County Donegal | Ireland | 55.0963889 | -8.0983333 | 380 | 2122 |
| Meendoran | city | County Donegal | Ireland | 55.2380556 | -7.3830556 | 337 | 2256 |
| Meenlaragh | city | County Donegal | Ireland | 55.1447222 | -8.1866667 | 68 | 1154 |
| Meenmore | city | County Donegal | Ireland | 54.9588889 | -8.3911111 | 0 | 1623 |
| Meennaraha | city | County Donegal | Ireland | 54.5761111 | -7.9638889 | 515 | 2390 |
| Meentullynagarn | city | County Donegal | Ireland | 54.6994444 | -8.4041667 | 324 | 2254 |
| Meentullynagarn Bridge | city | County Donegal | Ireland | 54.6927778 | -8.4002778 | 236 | 2254 |
| Meenybraddan | city | County Donegal | Ireland | 54.7197222 | -8.3016667 | 501 | 2321 |
| Meenychanon | city | County Donegal | Ireland | 54.6619444 | -8.5633333 | 518 | 1758 |
| Meenyollan | city | County Donegal | Ireland | 55.2027778 | -7.2816667 | 508 | 2296 |
| Melmore | city | County Donegal | Ireland | 55.2419444 | -7.7958333 | 0 | 914 |
| Mid Town | city | County Donegal | Ireland | 55.1347222 | -7.7022222 | 0 | 1856 |
| Middletown | city | County Donegal | Ireland | 55.0741667 | -8.2722222 | 229 | 2170 |
| Milford | city | County Donegal | Ireland | 55.0880556 | -7.6988889 | 226 | 2008 |
| Mill Town | city | County Donegal | Ireland | 54.9802778 | -7.5338889 | 209 | 2119 |
| Millford | city | County Donegal | Ireland | 55.0880556 | -7.6988889 | 226 | 2008 |
| Millmount | city | County Donegal | Ireland | 55.1219444 | -8.1097222 | 209 | 2122 |
| Milltown | city | County Donegal | Ireland | 54.6408333 | -8.3888889 | 3 | 1691 |
| Milltown | city | County Donegal | Ireland | 54.6530556 | -8.2586111 | 45 | 1641 |
| Milltown | city | County Donegal | Ireland | 54.8480556 | -7.6197222 | 193 | 2315 |
| Milltown | city | County Donegal | Ireland | 55.16 | -7.59 | 259 | 1940 |
| Milltown | city | County Donegal | Ireland | 55.0233333 | -7.4761111 | 196 | 2021 |
| Milltown | city | County Donegal | Ireland | 55.2338889 | -7.1544444 | 255 | 2266 |
| Min Larach | city | County Donegal | Ireland | 55.1447222 | -8.1866667 | 68 | 1154 |
| Min an Labain | city | County Donegal | Ireland | 54.9833333 | -7.8666667 | 242 | 2307 |
| Mitchells Town | city | County Donegal | Ireland | 55.0919444 | -7.2386111 | 0 | 3621 |
| Moin Searlas | city | County Donegal | Ireland | 54.6463889 | -8.1955556 | 19 | 1577 |
| Moin Séarlas | city | County Donegal | Ireland | 54.6463889 | -8.1955556 | 19 | 1577 |
| Monargan Glebe | city | County Donegal | Ireland | 54.7561111 | -8.3897222 | 288 | 2201 |
| Moneyhaughly | city | County Donegal | Ireland | 54.9741667 | -7.5897222 | 262 | 1855 |
| Moneylagan | city | County Donegal | Ireland | 54.9958333 | -7.7722222 | 259 | 2307 |
| Monglass | city | County Donegal | Ireland | 54.9788889 | -7.4444444 | 39 | 5164 |
| Moress | city | County Donegal | Ireland | 55.0730556 | -7.4827778 | 3 | 1626 |
| Mossedge | city | County Donegal | Ireland | 55.3291667 | -7.3097222 | 249 | 1799 |
| Mountcharles | city | County Donegal | Ireland | 54.6463889 | -8.1955556 | 19 | 1577 |
| Moville | city | County Donegal | Ireland | 55.1833333 | -7.05 | 0 | 1334 |
| Moyagh | city | County Donegal | Ireland | 55.055 | -7.7061111 | 180 | 2208 |
| Moyne Bridge | city | County Donegal | Ireland | 54.6347222 | -8.0591667 | 291 | 2297 |
| Muckros | city | County Donegal | Ireland | 54.6130556 | -8.5811111 | 0 | 803 |
| Muff | city | County Donegal | Ireland | 55.0666667 | -7.2666667 | 3 | 10496 |
| Muineagh | city | County Donegal | Ireland | 55.1941667 | -7.5302778 | 0 | 1282 |
| Mullagharry | city | County Donegal | Ireland | 55.2008333 | -7.5272222 | 203 | 1282 |
| Mullan | city | County Donegal | Ireland | 55.1319444 | -7.8477778 | 9 | 1705 |
| Mullanacross | city | County Donegal | Ireland | 54.5891667 | -8.1627778 | 55 | 1712 |
| Mullanasole | city | County Donegal | Ireland | 54.605 | -8.135 | 36 | 1712 |
| Mullanmore | city | County Donegal | Ireland | 54.7927778 | -8.2377778 | 360 | 2315 |
| Mullenieran Bridge | city | County Donegal | Ireland | 54.7897222 | -8.2888889 | 242 | 2318 |
| Mullingar | city | County Donegal | Ireland | 54.8052778 | -7.6763889 | 232 | 2316 |
| Mulnamin | city | County Donegal | Ireland | 54.8319444 | -8.3238889 | 452 | 2314 |
| Muntermellan | city | County Donegal | Ireland | 55.1988889 | -7.9613889 | 0 | 1383 |
| Murlas Bridge | city | County Donegal | Ireland | 54.6538889 | -8.1380556 | 0 | 1821 |
| Málainn | city | County Donegal | Ireland | 55.3 | -7.2666667 | 101 | 1874 |
| Mín Lárach | city | County Donegal | Ireland | 55.1447222 | -8.1866667 | 68 | 1154 |
| Mín an Lábáin | city | County Donegal | Ireland | 54.9833333 | -7.8666667 | 242 | 2307 |
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