| Name of the place | CERL ID of a place | Country | Longitude | Latitude | |
|---|---|---|---|---|---|
| Radeberg | cnl00030663 | Germany | 13.9166666666667 | 51.1166666666667 | |
| Radomierzyce (Radmeritz) | cnl00046865 | Poland | — | — | |
| Ragusa (Dubrovnik) | cnl00008750 | Croatia | 18.0894444444444 | 42.6494444444444 | |
| Rahnsdorf | cnl00024309 | Germany | — | — | |
| Rain (Landkreis Donau-Ries) | cnl00035733 | Germany | 10.9161111111111 | 48.6902777777778 | |
| Rakow | cnl00004845 | Poland | 21.0833333333333 | 50.6833333333333 | |
| Rambervillers | cnl00013078 | — | 6.62972222222222 | 48.35 | |
| Rammenau | cnl00019703 | — | 14.1330555555556 | 51.1494444444444 | |
| Rapallo | cnl00021251 | Italy | 9.23305555555556 | 44.35 | |
| Råshult | cnl00022975 | Sweden | 14.202 | 56.618 | |
| Rathenow | cnl00013101 | — | 12.33 | 52.6 | |
| Rathfarnham (co. Dublin) | — | Ireland | -6.285447 | 53.298776 | |
| Ratisbonne [non-CERL] | — | — | — | — | |
| Ratzeburg | cnl00009099 | — | 10.7694444444444 | 53.7 | |
| Ravenna | cnl00013115 | Italy | 12.1997222222222 | 44.42 | |
| Ravenswell (County Wicklow) | cnl00025026 | Ireland | -6.11136 | 53.20102 | |
| Ravezzano | cnl00022287 | — | — | — | |
| Reach (Cambridgeshire) | cnl00050770 | England | 0.3 | 52.27 | |
| Reading | cnl00013122 | England | -1.0 | 51.43 | |
| Réalmont | cnl00020826 | France | — | — | |
| Recife | cnl00021052 | Brazil | -34.900002 | -8.05 | |
| Redding | cnl00023226 | United States | — | — | |
| Rees | cnl00013140 | Germany | 6.4 | 51.77 | |
| Regensburg | cnl00016188 | Germany | 12.0991666666667 | 49.02 | |
| Reggio di Calabria | cnl00024075 | Italy | 15.6666666666667 | 38.1166666666667 |