| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Mabahn Goang | city | Montserrado County | Liberia | 6.25 | -10.7 | 39 | 24885 |
| Main | city | Montserrado County | Liberia | 6.6419444 | -10.5194444 | 383 | 13274 |
| Malony | city | Montserrado County | Liberia | 6.6666667 | -10.4333333 | 442 | 11646 |
| Marcasville | city | Montserrado County | Liberia | 6.2666667 | -10.7166667 | 68 | 38681 |
| Marthas Town | city | Montserrado County | Liberia | 6.25 | -10.6666667 | 137 | 24885 |
| Mason Town | city | Montserrado County | Liberia | 6.5363889 | -10.6941667 | 301 | 14158 |
| Massaquoi Town | city | Montserrado County | Liberia | 6.4563889 | -10.7841667 | 252 | 11324 |
| Mataley | city | Montserrado County | Liberia | 6.3 | -10.7666667 | 98 | 34999 |
| Matota | city | Montserrado County | Liberia | 6.6594444 | -10.4522222 | 439 | 11943 |
| Mazien Town | city | Montserrado County | Liberia | 6.565 | -10.7041667 | 324 | 8003 |
| Mein | city | Montserrado County | Liberia | 6.6419444 | -10.5194444 | 383 | 13274 |
| Mein Ninge | city | Montserrado County | Liberia | 6.6 | -10.5166667 | 351 | 12820 |
| Mills Center | city | Montserrado County | Liberia | 6.2333333 | -10.6666667 | 121 | 24885 |
| Millsburg | city | Montserrado County | Liberia | 6.4741667 | -10.6788889 | 262 | 19352 |
| Mission Camp | city | Montserrado County | Liberia | 6.4666667 | -10.7833333 | 259 | 11183 |
| Moingbata | city | Montserrado County | Liberia | 6.2241667 | -10.6455556 | 0 | 23903 |
| Mona Town | city | Montserrado County | Liberia | 6.7 | -10.5833333 | 357 | 10698 |
| Monrovia | city | Montserrado County | Liberia | 6.3105556 | -10.8047222 | 0 | 16196 |
| Monya | city | Montserrado County | Liberia | 6.5358333 | -10.7408333 | 308 | 11923 |
| Monya Town | city | Montserrado County | Liberia | 6.5358333 | -10.7408333 | 308 | 11923 |
| Morris Farm | city | Montserrado County | Liberia | 6.5427778 | -10.3858333 | 433 | 9508 |
| Morris Farm | city | Montserrado County | Liberia | 6.5463889 | -10.3844444 | 433 | 9508 |
| Morris Farm 1 | city | Montserrado County | Liberia | 6.5463889 | -10.3844444 | 433 | 9508 |
| Morris Town | city | Montserrado County | Liberia | 6.4833333 | -10.6833333 | 265 | 19352 |
| Motobli | city | Montserrado County | Liberia | 6.6666667 | -10.45 | 439 | 11646 |
| Mount Barclay | city | Montserrado County | Liberia | 6.3494444 | -10.6530556 | 321 | 22622 |
| Mount Barclay | city | Montserrado County | Liberia | 6.35 | -10.65 | 321 | 22622 |
| Mount Barclay Camp | city | Montserrado County | Liberia | 6.35 | -10.65 | 321 | 22622 |
| Mount Coffee | city | Montserrado County | Liberia | 6.4886111 | -10.6463889 | 275 | 23274 |
| Mulbah Farm | city | Montserrado County | Liberia | 6.7427778 | -10.4586111 | 465 | 12881 |
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