| Name of the place | CERL ID of a place | Country | Longitude | Latitude | |
|---|---|---|---|---|---|
| Shrewsbury (Shropshire) | cnl00014044 | England | -2.72972222222222 | 52.7197222222222 | |
| Shropshire | cnl00027623 | England | — | — | |
| Sicyone | cnl00020739 | — | — | — | |
| Sidé | cnl00026337 | Turkey | — | — | |
| Siegen | cnl00014053 | Germany | 8.03 | 50.87 | |
| Siena | cnl00027020 | Italy | 11.33 | 43.32 | |
| Sierra Leone | cnl00026370 | Sierra Leone | -13.28972 | 8.43194 | |
| Simbirsk | cnl00019740 | Russia | — | — | |
| Sinai | cnl00004374 | — | — | — | |
| Sint Annaland | cnl00048154 | — | — | — | |
| Sint Laurens | — | Netherlands | 3.603333 | 51.526944 | |
| Sint-Truiden | cnl00027117 | Belgium | 5.18305555555556 | 50.8166666666667 | |
| Siracusa | cnl00014084 | Italy | 15.27 | 37.09 | |
| Sissinghurst (Kent) | — | England | 0.5634 | 51.1073 | |
| Sisteron | cnl00014087 | France | 5.93 | 44.2 | |
| Sittard | cnl00015831 | Netherlands | — | — | |
| Sizergh | — | England | -2.771944 | 54.284444 | |
| Skirlaugh | cnl00017231 | England | — | — | |
| Skjern | cnl00000574 | Denmark | 8.5 | 55.95 | |
| Slane (Meath) | cnl00050708 | Ireland | -6.5434 | 53.7086 | |
| Slapton | — | England | -3.65 | 50.3 | |
| Slavkov | cnl00021239 | — | — | — | |
| Sleat | cnl00026744 | Scotland | -5.93305555555556 | 57.1166666666667 | |
| Slough | cnl00020963 | England | — | — | |
| Sluis | cnl00021119 | Netherlands | 3.386111 | 51.308333 |