| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Olekenbos | city | Provincie West-Vlaanderen | Belgium | 50.8333333 | 3.3833333 | 65 | 43093 |
| Olen | city | Provincie Antwerpen | Belgium | 51.15 | 4.85 | 65 | 42320 |
| Olende | city | Provincie Limburg | Belgium | 51 | 5.5833333 | 285 | 41981 |
| Oleye | city | Province de Liege | Belgium | 50.7166667 | 5.2833333 | 360 | 22911 |
| Oliehoek | city | Provincie Oost-Vlaanderen | Belgium | 50.85 | 3.6 | 32 | 28057 |
| Ollemanshoek | city | Provincie Antwerpen | Belgium | 51.0666667 | 4.9 | 91 | 32045 |
| Ollignies | city | Province de Hainaut | Belgium | 50.6833333 | 3.85 | 131 | 19070 |
| Ollomont | city | | Belgium | 50.15 | 5.6833333 | 1286 | 2592 |
| Olloy | city | Province de Namur | Belgium | 50.0666667 | 4.6 | 721 | 4497 |
| Olloy-sur-Viroin | city | Province de Namur | Belgium | 50.0666667 | 4.6 | 721 | 4497 |
| Olmen | city | Provincie Antwerpen | Belgium | 51.15 | 5.1666667 | 95 | 28054 |
| Olmenhoek | city | Province de )) (( Brabant | Belgium | 50.9166667 | 4.5833333 | 65 | 42255 |
| Olne | city | Province de Liege | Belgium | 50.5833333 | 5.75 | 656 | 27858 |
| Olsene | city | Provincie Oost-Vlaanderen | Belgium | 50.9333333 | 3.4666667 | 39 | 33764 |
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