| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Orbais | city | Province de )) (( Brabant | Belgium | 50.6333333 | 4.7666667 | 485 | 12917 |
| Orchies | city | Province de Hainaut | Belgium | 50.65 | 3.25 | 98 | 64858 |
| Orchimont | city | Province de Namur | Belgium | 49.9 | 4.9333333 | 1135 | 2796 |
| Orcq | city | Province de Hainaut | Belgium | 50.6 | 3.3333333 | 213 | 30152 |
| Ordin | city | Province de Namur | Belgium | 50.4666667 | 4.7 | 295 | 33515 |
| Ordingen | city | Provincie Limburg | Belgium | 50.8166667 | 5.2166667 | 183 | 29272 |
| Oret | city | Province de Namur | Belgium | 50.3 | 4.6166667 | 813 | 11093 |
| Oreye | city | Province de Liege | Belgium | 50.7333333 | 5.3666667 | 337 | 16747 |
| Orgeo | city | Province de Luxembourg | Belgium | 49.8333333 | 5.3 | 1272 | 3978 |
| Orlitain | city | Provincie Oost-Vlaanderen | Belgium | 50.75 | 3.5 | 78 | 16460 |
| Ormeignies | city | Province de Hainaut | Belgium | 50.6 | 3.75 | 196 | 15572 |
| Ormont | city | Province de Hainaut | Belgium | 50.6333333 | 3.3666667 | 59 | 25366 |
| Orp-le-Grand | city | Province de )) (( Brabant | Belgium | 50.7 | 5 | 344 | 14291 |
| Orp-le-Petit | city | Province de )) (( Brabant | Belgium | 50.7 | 4.9833333 | 308 | 13045 |
| Orroir | city | Province de Hainaut | Belgium | 50.75 | 3.4666667 | 62 | 13875 |
| Orsainfaing | city | Province de Luxembourg | Belgium | 49.7166667 | 5.5166667 | 1105 | 4000 |
| Orsmaal | city | Province de )) (( Brabant | Belgium | 50.8 | 5.0666667 | 190 | 19397 |
| Orsmaal-Gussenhoven | city | Province de )) (( Brabant | Belgium | 50.8 | 5.0666667 | 190 | 19397 |
| Orsmael-Gussenhoven | city | Province de )) (( Brabant | Belgium | 50.8 | 5.0666667 | 190 | 19397 |
| Ortheuville | city | Province de Luxembourg | Belgium | 50.0833333 | 5.5333333 | 1230 | 2404 |
| Ortho | city | Province de Luxembourg | Belgium | 50.1333333 | 5.6166667 | 1384 | 2613 |