| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Macadam | city | Province of New Brunswick | Canada | 45.5833333 | -67.3333333 | 498 | 1505 |
| Magaguadavic | city | Province of New Brunswick | Canada | 45.6833333 | -67.1833333 | 406 | 277 |
| Marysville | city | Province of New Brunswick | Canada | 45.9666667 | -66.5833333 | 150 | 10653 |
| Matapedia | city | Province of New Brunswick | Canada | 47.9666667 | -66.9333333 | 518 | 596 |
| McAdam | city | Province of New Brunswick | Canada | 45.5833333 | -67.3333333 | 498 | 1505 |
| McAdam Junction | city | Province of New Brunswick | Canada | 45.5833333 | -67.3333333 | 498 | 1505 |
| McGivney | city | Province of New Brunswick | Canada | 46.3666667 | -66.5666667 | 600 | 112 |
| McNamee | city | Province of New Brunswick | Canada | 46.5166667 | -66.2666667 | 380 | 187 |
| Meductic | city | Province of New Brunswick | Canada | 46 | -67.4666667 | 91 | 611 |
| Melrose | city | Province of New Brunswick | Canada | 46.1 | -63.9333333 | 104 | 397 |
| Memramcook | city | Province of New Brunswick | Canada | 46 | -64.55 | 55 | 2301 |
| Millerton | city | Province of New Brunswick | Canada | 46.9 | -65.6333333 | 22 | 699 |
| Milltown | city | Province of New Brunswick | Canada | 45.1666667 | -67.3 | 98 | 7062 |
| Millville | city | Province of New Brunswick | Canada | 46.1333333 | -67.1833333 | 485 | 829 |
| Miramichi | city | Province of New Brunswick | Canada | 47.0333333 | -65.1833333 | 26 | 486 |
| Moncton | city | Province of New Brunswick | Canada | 46.0833333 | -64.7666667 | 39 | 26994 |
| Moores Mills | city | Province of New Brunswick | Canada | 45.2833333 | -67.2666667 | 354 | 1157 |
| Mount Pleasant | city | Province of New Brunswick | Canada | 46.4 | -67.4833333 | 554 | 836 |
| Mouth of Keswick | city | Province of New Brunswick | Canada | 46.0166667 | -66.8333333 | 95 | 1122 |
| Musquash | city | Province of New Brunswick | Canada | 45.1833333 | -66.3333333 | 3 | 510 |