| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Oignies | city | Wallonie | Belgium | 50.43 | 4.60 | 830 | 53391 |
| Oignies | city | Wallonie | Belgium | 50.02 | 4.64 | 1000 | 4348 |
| Oirbeek | city | Vlaanderen | Belgium | 50.80 | 4.90 | 213 | 23865 |
| Oisefagne | city | Wallonie | Belgium | 49.87 | 5.65 | 1669 | 1852 |
| Oisquercq | city | Wallonie | Belgium | 50.67 | 4.22 | 262 | 47931 |
| Oizy | city | Wallonie | Belgium | 49.89 | 5.01 | 1669 | 3274 |