| Name of the place | CERL ID of a place | Country | Longitude | Latitude | |
|---|---|---|---|---|---|
| Hunstanton Hall | — | England | — | — | |
| Huriel | cnl00044816 | — | 2.47777777777778 | 46.3736111111111 | |
| Husinec | cnl00020683 | Czech Republic | — | — | |
| Hvar | cnl00019251 | Croatia | 16.7330555555556 | 43.1330555555556 | |
| Hviding | cnl00032070 | Denmark | 8.684915 | 55.261992 | |
| Hydra | cnl00041450 | — | — | — | |
| Hyeres | cnl00018573 | France | 6.11666666666667 | 43.1166666666667 | |
| Iceland | cnl00025645 | Iceland | — | — | |
| Ie | — | Netherlands | 6.1 | 53.33 | |
| Iekaterinoslav | cnl00024779 | Ukraine | 34.9833333 | 48.45 | |
| Ieper | cnl00006367 | Belgium | — | — | |
| Ihlow | cnl00048762 | Germany | 13.3330555555556 | 51.8830555555556 | |
| Ijsselstein | cnl00016312 | Netherlands | 5.5 | 52.0166666666667 | |
| Ijzendoorn | cnl00050680 | Netherlands | 5.533056 | 51.906389 | |
| Ilchester | cnl00024428 | England | — | — | |
| Ile de France | cnl00000118 | France | — | — | |
| Île de la Réunion | cnl00018384 | France | 55.4504 | -20.88231 | |
| Ille-et-Vilaine | cnl00024197 | France | — | — | |
| Imola | cnl00010310 | Italy | 11.6997222222222 | 44.35 | |
| Impington | cnl00049905 | — | — | — | |
| Ingelfingen-Dörrenzimmern | cnl00049635 | Germany | — | — | |
| Ingenheim | cnl00000707 | Germany | 8.06 | 49.97 | |
| Ingolstadt | cnl00016096 | Germany | 11.4291666666667 | 48.77 | |
| Ingolstadt [non-CERL] | — | — | — | — | |
| Inishowen (Donegal) | — | Ireland | — | — |