| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Oblassy | city | Poland | 51.33 | 21.92 | 452 | 5027 | |
| Oblassy Dworskie | city | Poland | 51.33 | 21.92 | 452 | 5027 | |
| Oblassy Ksieze | city | Poland | 51.33 | 21.92 | 452 | 5027 | |
| Oblasy | city | Poland | 51.33 | 21.92 | 452 | 5027 | |
| Oblasy Dworskie | city | Poland | 51.33 | 21.92 | 452 | 5027 | |
| Oblasy Księże | city | Poland | 51.33 | 21.92 | 452 | 5027 | |
| Oblizniak | city | Poland | 51.27 | 22.10 | 659 | 9319 | |
| Ogonow | city | Poland | 51.63 | 22.00 | 577 | 9080 | |
| Okale | city | Poland | 51.32 | 21.92 | 593 | 5193 | |
| Olempin | city | Poland | 51.40 | 22.25 | 616 | 6066 | |
| Oleśniki | city | Poland | 51.12 | 23.03 | 580 | 7178 | |
| Olszanka | city | Poland | 51.03 | 22.67 | 846 | 4053 | |
| Olszewnica | city | Poland | 51.77 | 22.50 | 475 | 4420 | |
| Olszowiec | city | Poland | 51.02 | 22.60 | 830 | 5590 | |
| Olszowiec | city | Poland | 51.37 | 22.23 | 574 | 7663 | |
| Opatkowice | city | Poland | 51.47 | 21.88 | 416 | 7051 | |
| Opoka | city | Poland | 51.42 | 22.08 | 459 | 8503 | |
| Opole | city | Poland | 51.15 | 21.97 | 515 | 7485 | |
| Opole Lubelskie | city | Poland | 51.15 | 21.97 | 515 | 7485 | |
| Orlicz | city | Poland | 51.42 | 22.32 | 567 | 5848 | |
| Osiny | city | Poland | 51.47 | 22.07 | 551 | 7324 | |
| Osiny | city | Poland | 51.15 | 22.18 | 830 | 7623 | |
| Osmolice | city | Poland | 51.12 | 22.50 | 639 | 14413 | |
| Osowa | city | Poland | 51.05 | 22.58 | 859 | 5853 | |
| Osowka | city | Poland | 51.37 | 22.47 | 659 | 5713 | |
| Ossowo | city | Poland | 51.72 | 22.48 | 479 | 4670 | |
| Ossówno | city | Poland | 51.72 | 22.48 | 479 | 4670 | |
| Ostrow | city | Poland | 51.60 | 22.33 | 429 | 4338 | |
| Ostrow | city | Poland | 51.00 | 22.25 | 728 | 5609 | |
| Ostrow | city | Poland | 51.50 | 22.85 | 524 | 4738 | |
| Ostrow Podlaski | city | Poland | 51.50 | 22.85 | 524 | 4738 | |
| Ostrowy Kulczyńskie | city | Poland | 51.37 | 23.40 | 620 | 2021 | |
| Ostrów Lubelski | city | Poland | 51.50 | 22.85 | 524 | 4738 | |
| Ostrówek | city | Poland | 51.27 | 22.98 | 541 | 5038 | |
| Ostrówek | city | Poland | 51.58 | 22.60 | 492 | 3869 | |
| Oszczywilk | city | Poland | 51.65 | 22.00 | 564 | 8960 | |
| Osówno | city | Poland | 51.72 | 22.48 | 479 | 4670 | |
| Owczarnia | city | Poland | 51.03 | 21.98 | 597 | 5151 | |
| Ownia | city | Poland | 51.70 | 21.92 | 567 | 6355 | |
| Ozarow przy Lugowie | city | Poland | 51.33 | 22.32 | 751 | 7011 | |
| Ożarów | city | Poland | 51.12 | 21.95 | 656 | 7560 | |
| Ożarów | city | Poland | 51.28 | 22.30 | 695 | 7347 | |
| Ożarów Drugi | city | Poland | 51.12 | 21.95 | 656 | 7560 | |
| Ożarów Pierwszy | city | Poland | 51.12 | 21.93 | 688 | 7071 | |
| Ożarów przy Ługowie | city | Poland | 51.33 | 22.32 | 751 | 7011 |