| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Ober-Emmels | city | Province de Liege | Belgium | 50.2991667 | 6.0891667 | 1709 | 5120 |
| Oberhausen | city | Province de Liege | Belgium | 50.15 | 6.15 | 1610 | 4681 |
| Oberst-Crombach | city | Province de Liege | Belgium | 50.2811111 | 6.035 | 1709 | 4813 |
| Oborne | city | Province de Liege | Belgium | 50.75 | 5.5333333 | 423 | 47259 |
| Obsinnich | city | Province de Liege | Belgium | 50.7333333 | 5.8833333 | 698 | 16582 |
| Ochain | city | Province de Liege | Belgium | 50.4333333 | 5.3666667 | 905 | 5581 |
| Ocquier | city | Province de Liege | Belgium | 50.4 | 5.4 | 754 | 4962 |
| Odet | city | Province de Liege | Belgium | 50.3833333 | 5.3 | 918 | 5133 |
| Odeur | city | Province de Liege | Belgium | 50.7 | 5.4166667 | 459 | 38057 |
| Odrimont | city | Province de Liege | Belgium | 50.3166667 | 5.8 | 1351 | 3611 |
| Oe | city | Province de Liege | Belgium | 50.6166667 | 6.0333333 | 997 | 9657 |
| Oerle | city | Province de Liege | Belgium | 50.7333333 | 5.3666667 | 337 | 16747 |
| Ogn'e | city | Province de Liege | Belgium | 50.5166667 | 5.65 | 810 | 25783 |
| Ognee | city | Province de Liege | Belgium | 50.5166667 | 5.65 | 810 | 25783 |
| Ognée | city | Province de Liege | Belgium | 50.5166667 | 5.65 | 810 | 25783 |
| Ognʼe | city | Province de Liege | Belgium | 50.5166667 | 5.65 | 810 | 25783 |
| Oha | city | Province de Liege | Belgium | 50.5333333 | 5.2 | 239 | 24607 |
| Oleye | city | Province de Liege | Belgium | 50.7166667 | 5.2833333 | 360 | 22911 |
| Olne | city | Province de Liege | Belgium | 50.5833333 | 5.75 | 656 | 27858 |
| Omal | city | Province de Liege | Belgium | 50.65 | 5.2 | 495 | 12356 |
| Ombret-Rausa | city | Province de Liege | Belgium | 50.55 | 5.3333333 | 321 | 27320 |
| Ombret-Rawsa | city | Province de Liege | Belgium | 50.55 | 5.3333333 | 321 | 27320 |
| Once | city | Province de Liege | Belgium | 50.7666667 | 5.5833333 | 387 | 27614 |
| Ondenval | city | Province de Liege | Belgium | 50.3833333 | 6.1166667 | 1587 | 6236 |
| Oneux | city | Province de Liege | Belgium | 50.6 | 5.45 | 226 | 59240 |
| Oneux | city | Province de Liege | Belgium | 50.4666667 | 5.5833333 | 787 | 18012 |
| Oneux | city | Province de Liege | Belgium | 50.55 | 5.8166667 | 793 | 47076 |
| Oreye | city | Province de Liege | Belgium | 50.7333333 | 5.3666667 | 337 | 16747 |
| Otaimont | city | Province de Liege | Belgium | 50.4166667 | 6.0166667 | 1574 | 9078 |
| Oteppe | city | Province de Liege | Belgium | 50.5833333 | 5.1333333 | 492 | 15794 |
| Othee | city | Province de Liege | Belgium | 50.7166667 | 5.45 | 459 | 30453 |
| Othée | city | Province de Liege | Belgium | 50.7166667 | 5.45 | 459 | 30453 |
| Otrange | city | Province de Liege | Belgium | 50.7333333 | 5.3666667 | 337 | 16747 |
| Oudler | city | Province de Liege | Belgium | 50.2027778 | 6.0936111 | 1348 | 4338 |
| Oudoumont | city | Province de Liege | Belgium | 50.6166667 | 5.3333333 | 597 | 22042 |
| Ouffet | city | Province de Liege | Belgium | 50.4333333 | 5.4666667 | 898 | 7195 |
| Oufny | city | Province de Liege | Belgium | 50.3833333 | 5.7 | 1190 | 6240 |
| Ougree | city | Province de Liege | Belgium | 50.6 | 5.5333333 | 515 | 157511 |
| Ougrée | city | Province de Liege | Belgium | 50.6 | 5.5333333 | 515 | 157511 |
| Ouhar | city | Province de Liege | Belgium | 50.4833333 | 5.55 | 698 | 18012 |
| Ouldoumont | city | Province de Liege | Belgium | 50.6166667 | 5.3333333 | 597 | 22042 |
| Oupeye | city | Province de Liege | Belgium | 50.7 | 5.65 | 187 | 115926 |
| Ouren | city | Province de Liege | Belgium | 50.1333333 | 6.1333333 | 1328 | 4681 |
| Outre Meuse | city | Province de Liege | Belgium | 50.65 | 5.5833333 | 203 | 194726 |
| Outrelouxhe | city | Province de Liege | Belgium | 50.5 | 5.3333333 | 787 | 14165 |
| Outrewarche | city | Province de Liege | Belgium | 50.45 | 6.1333333 | 1732 | 5029 |
| Overoet | city | Province de Liege | Belgium | 50.6333333 | 6 | 925 | 15446 |
| Overoth | city | Province de Liege | Belgium | 50.6333333 | 6 | 925 | 15446 |
| Overstehindel | city | Province de Liege | Belgium | 50.7333333 | 5.9166667 | 688 | 20890 |
| Ovifat | city | Province de Liege | Belgium | 50.4666667 | 6.1 | 1771 | 6609 |
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