| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Marstadhir | city | Iceland | 65.83 | -18.62 | 223 | 0 | |
| Melar | city | Iceland | 65.87 | -18.67 | 272 | 0 | |
| Melar | city | Iceland | 65.65 | -18.10 | 127 | 6551 | |
| Melgerdhi | city | Iceland | 65.47 | -18.17 | 236 | 0 | |
| Melgerði | city | Iceland | 65.47 | -18.17 | 236 | 0 | |
| Merkigil | city | Iceland | 65.55 | -18.15 | 344 | 32 | |
| Midhgardhar | city | Iceland | 66.53 | -18.00 | 39 | 92 | |
| Midhgerdhi | city | Iceland | 65.50 | -18.20 | 206 | 0 | |
| Midhhus | city | Iceland | 65.53 | -18.17 | 246 | 0 | |
| Midhkot | city | Iceland | 65.98 | -18.55 | 49 | 860 | |
| Midhland | city | Iceland | 65.63 | -18.47 | 1545 | 0 | |
| Mikligardhur | city | Iceland | 65.50 | -18.22 | 331 | 0 | |
| Mikligarður | city | Iceland | 65.50 | -18.22 | 331 | 0 | |
| Miðgarðar | city | Iceland | 66.53 | -18.00 | 39 | 92 | |
| Miðgerði | city | Iceland | 65.50 | -18.20 | 206 | 0 | |
| Miðhús | city | Iceland | 65.53 | -18.17 | 246 | 0 | |
| Miðkot | city | Iceland | 65.98 | -18.55 | 49 | 860 | |
| Miðland | city | Iceland | 65.63 | -18.47 | 1545 | 0 | |
| Modhrufell | city | Iceland | 65.52 | -18.22 | 544 | 0 | |
| Modhruvellir | city | Iceland | 65.45 | -18.17 | 531 | 0 | |
| Modhruvellir | city | Iceland | 65.77 | -18.25 | 65 | 256 | |
| Moedruvellir | city | Iceland | 65.45 | -18.17 | 531 | 0 | |
| Moldhaugar | city | Iceland | 65.73 | -18.20 | 223 | 1785 | |
| Molðaugar | city | Iceland | 65.73 | -18.20 | 223 | 1785 | |
| Munkathvera | city | Iceland | 65.55 | -18.08 | 229 | 84 | |
| Munkaþverá | city | Iceland | 65.55 | -18.08 | 229 | 84 | |
| Myrká | city | Iceland | 65.63 | -18.57 | 534 | 0 | |
| Myrkárdalur | city | Iceland | 65.63 | -18.58 | 669 | 0 | |
| Máná | city | Iceland | 66.17 | -19.00 | 164 | 425 | |
| Márstaðir | city | Iceland | 65.83 | -18.62 | 223 | 0 | |
| Möðrufell | city | Iceland | 65.52 | -18.22 | 544 | 0 | |
| Möðruvellir | city | Iceland | 65.45 | -18.17 | 531 | 0 | |
| Möðruvellir | city | Iceland | 65.77 | -18.25 | 65 | 256 | |
| Mýrarlón | city | Iceland | 65.70 | -18.17 | 252 | 6138 |