| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Ossegem | city | Bruxelles-Capitale | Belgium | 50.85 | 4.30 | 167 | 410819 |
| Osseghem | city | Bruxelles-Capitale | Belgium | 50.85 | 4.30 | 167 | 410819 |
| Oudergem | city | Bruxelles-Capitale | Belgium | 50.82 | 4.43 | 232 | 336704 |
| Overheembeek | city | Bruxelles-Capitale | Belgium | 50.90 | 4.37 | 108 | 310487 |