| Name of the place | CERL ID of a place | Country | Longitude | Latitude | |
|---|---|---|---|---|---|
| Llerena | cnl00017216 | — | — | — | |
| Lobenstein | cnl00011271 | Germany | 11.65 | 50.45 | |
| Loches | cnl00011281 | France | 1.0 | 47.13 | |
| Loenen aan de Vecht | cnl00005002 | Netherlands | 5.022222 | 52.210278 | |
| Loevestein | cnl00004991 | Netherlands | 5.02138888888889 | 51.8122222222222 | |
| Logroño | cnl00011291 | Spain | -2.44555555555556 | 42.465 | |
| Lombardie | cnl00027510 | — | — | — | |
| Lombez | cnl00026972 | France | 0.916666666666667 | 43.4830555555556 | |
| Lommatzsch | cnl00030762 | Germany | 13.3 | 51.2 | |
| London | cnl00006402 | England | -0.13 | 51.5091666666667 | |
| London (Savoy Hospital) | — | England | — | — | |
| London [non-CERL] | — | — | — | — | |
| London [non-CERL] | — | — | — | — | |
| Longueil | cnl00017397 | France | 0.9497 | 49.8836 | |
| Lons-Le-Saunier | cnl00019114 | France | — | — | |
| Loosduinen | cnl00043343 | Netherlands | 4.23444444444444 | 52.0505555555556 | |
| Lorenzaga di Motta di Livanza | cnl00021984 | — | — | — | |
| Loreto | cnl00011317 | Italy | 13.6094444444444 | 43.4394444444444 | |
| Lorient | cnl00003620 | — | — | — | |
| Lorraine | cnl00018496 | France | — | — | |
| Lorris | cnl00018394 | France | 2.513 | 47.889 | |
| 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 | — | — |