| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Sint-Odiliënberg | city | Limburg | Netherlands | 51.14 | 6.00 | 95 | 43155 |
| Sint-Oedenrode | city | Noord-Brabant | Netherlands | 51.57 | 5.46 | 32 | 33832 |
| Sint-Omaars | city | Nord-Pas-de-Calais | France | 50.75 | 2.26 | 16 | 50086 |
| Sint-Onolfs | city | Vlaanderen | Belgium | 51.05 | 4.08 | 3 | 53948 |
| Sint-Onolfs-Dijk | city | Vlaanderen | Belgium | 51.05 | 4.08 | 3 | 53948 |