| Name of the place | CERL ID of a place | Country | Longitude | Latitude | |
|---|---|---|---|---|---|
| Lund | cnl00011388 | Sweden | 13.18 | 55.7 | |
| Lüneburg | cnl00010972 | Germany | 10.4 | 53.25 | |
| Lunéville | cnl00011391 | France | 6.5 | 48.6 | |
| Luslawice | cnl00004571 | Poland | 20.8166666666667 | 49.85 | |
| Luxembourg | cnl00011408 | Luxembourg | 6.12972222222222 | 49.6097222222222 | |
| Luxembourg [non-CERL] | — | — | — | — | |
| Luxeuil les Bains | cnl00033202 | France | 6.38305555555556 | 47.8166666666667 | |
| Luxicropolis | — | No country: false imprint | — | — | |
| Luzern | cnl00027772 | Switzerland | 8.26944444444445 | 47.0794444444444 | |
| Luzy | cnl00038918 | France | — | — | |
| Lycopolis | cnl00021502 | Egypt | — | — | |
| Lyme Handley (Cheshire) | cnl00050725 | England | -2.054 | 53.339 | |
| Lyon | cnl00011383 | France | 4.85 | 45.75 | |
| Lyon [non-CERL] | — | — | — | — | |
| Lyon [non-CERL] [non-CERL] | — | — | — | — | |
| Lyons-la-Forêt | cnl00018000 | France | 1.4769 | 49.4003 | |
| Maarheze | — | Netherlands | 5.613333 | 51.310833 | |
| Maarssen | cnl00005276 | Netherlands | 5.03305555555556 | 52.1330555555556 | |
| Maassluis | cnl00005301 | Netherlands | 4.23305555555556 | 51.9330555555556 | |
| Maastricht | cnl00016317 | Netherlands | 5.69 | 50.85 | |
| Maastricht [non-CERL] | — | — | — | — | |
| Macerata | cnl00016127 | Italy | 13.4497222222222 | 43.2997222222222 | |
| Mackworth (Derbyshire) | cnl00019921 | England | -1.535 | 52.935 | |
| Macôn | cnl00018919 | France | 4.8313 | 46.3063 | |
| Macon | cnl00011430 | — | 4.83 | 46.2997222222222 |