| Name of the place | CERL ID of a place | Country | Longitude | Latitude | |
|---|---|---|---|---|---|
| Millau | cnl00011710 | France | 3.08 | 44.1 | |
| Milston (Wiltshire) | cnl00050684 | England | -1.767 | 51.207 | |
| Milton Keynes | cnl00030053 | England | -0.733333333333333 | 52.0166666666667 | |
| Mindelheim | cnl00016143 | Germany | 10.48 | 48.0497222222222 | |
| Minden | cnl00011720 | Germany | 8.92 | 52.28 | |
| Mirandola | cnl00011733 | Italy | 11.07 | 44.88 | |
| Mirecourt | cnl00011737 | France | 6.13 | 48.3 | |
| Missolonghi | cnl00002965 | Greece | 21.4330555555556 | 38.3830555555556 | |
| Mizoën | cnl00022737 | France | 6.1431 | 45.0511 | |
| Mobile (Alabama) | cnl00029841 | United States | — | — | |
| Modena | cnl00006229 | Italy | 10.9330555555556 | 44.6497222222222 | |
| Modena [non-CERL] | — | — | — | — | |
| Moerkapelle | — | Netherlands | 4.575278 | 52.045556 | |
| Moers | cnl00011769 | Germany | 6.65 | 51.45 | |
| Moffat (Dumfriesshire) | cnl00026708 | Scotland | -3.442 | 55.332 | |
| Mohrungen (Morąg) | cnl00000712 | Poland | 19.92602 | 53.91711 | |
| Moirans | cnl00038930 | France | — | — | |
| Moirans-en-Montagne | cnl00022923 | France | — | — | |
| Molenbeek-Saint-Jean | cnl00017758 | — | 4.33305555555556 | 50.85 | |
| Molfetta | cnl00017249 | Italy | — | — | |
| Mollis | cnl00021964 | Switzerland | 9.083333 | 47.1 | |
| Molmerswende | cnl00031337 | Germany | 11.261111 | 51.627222 | |
| Monaco | cnl00003034 | Monaco | — | — | |
| Monaghan | cnl00027656 | Ireland | -6.970825 | 54.247926 | |
| Moncontour | cnl00021097 | France | -0.0158 | 46.8825 |