| Name of the place | CERL ID of a place | Country | Longitude | Latitude | |
|---|---|---|---|---|---|
| Los Angeles | cnl00011326 | United States | -118.25 | 34.05 | |
| Loudéac | cnl00003088 | — | 2.75388888888889 | 48.1777777777778 | |
| Loudun | cnl00011335 | France | 0.07 | 47.0 | |
| Loughborough | cnl00021148 | England | — | — | |
| Louvain [non-CERL] | — | — | — | — | |
| Löwenberg (Lwówek Śląski) | — | Poland | — | — | |
| Lübeck | cnl00010970 | Germany | 10.7 | 53.87 | |
| Lübeck [non-CERL] | — | — | — | — | |
| Lublin | cnl00011260 | Poland | 22.57 | 51.25 | |
| Lucca | cnl00009102 | Italy | 10.48 | 43.8297222222222 | |
| Lucca [non-CERL] | — | — | — | — | |
| Lucena | cnl00020080 | Spain | -4.48522 | 37.40881 | |
| Lucerne [non-CERL] | — | — | — | — | |
| Lude | cnl00022482 | France | — | — | |
| Lüdingworth | cnl00022795 | Germany | 8.75694444444444 | 53.7991666666667 | |
| Ludlow | cnl00000893 | England | -2.71666666666667 | 52.3666666666667 | |
| Ludwigsburg | cnl00011374 | — | 9.17972222222222 | 48.8997222222222 | |
| Lugano | cnl00011382 | Italy | 8.97 | 46.0 | |
| Lugnano | cnl00050914 | Italy | 12.3330555555556 | 42.5666666666667 | |
| 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] | — | — | — | — |