| Name of the place | CERL ID of a place | Country | Longitude | Latitude | |
|---|---|---|---|---|---|
| Metz | cnl00008298 | France | 6.16944444444445 | 49.13 | |
| Metz | cnl00033007 | — | 6.16944444444445 | 49.13 | |
| Metz [non-CERL] | — | — | — | — | |
| Meulan | cnl00017013 | France | — | — | |
| Meulebeke | cnl00017373 | Belgium | 3.283333 | 50.95 | |
| Meung-sur-Loire | cnl00019512 | France | 1.6992 | 47.8294 | |
| Mexico | cnl00017684 | Mexico | -99.133209 | 19.432608 | |
| Meximieux | cnl00019983 | France | — | — | |
| Meylan | cnl00027532 | — | 5.78305555555556 | 45.2330555555556 | |
| Meyrueis | cnl00019834 | — | — | — | |
| Mianeh | cnl00019967 | Iran | 47.7 | 37.41667 | |
| Mickley (Northumberland) | — | England | -1.8748 | 54.9448 | |
| Middelburg | cnl00011695 | Netherlands | 3.62 | 51.5 | |
| Middelburg [non-CERL] | — | — | — | — | |
| Middenbeemster | cnl00024981 | Netherlands | — | — | |
| Middlesex | cnl00022286 | England | — | — | |
| Middleton (Buckinghamshire) | — | England | -0.7047 | 52.0422 | |
| Midwolda | — | Netherlands | 7.016111 | 53.192778 | |
| Mijdrecht | cnl00023246 | Netherlands | 4.866667 | 52.2 | |
| Mikulov | cnl00011705 | Czech Republic | 16.64 | 48.81 | |
| Milano | cnl00016128 | Italy | 9.19944444444445 | 45.46 | |
| Milano [non-CERL] | — | — | — | — | |
| Milborne-Port | cnl00003130 | England | -2.46055555555556 | 50.9663888888889 | |
| Milford (Wiltshire) | cnl00050694 | England | -1.774 | 51.076 | |
| Milland (Sussex) | cnl00050689 | England | -0.80607 | 51.03601 |