| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Ober Salzbrunn | city | Poland | 50.82 | 16.28 | 1236 | 91804 | |
| Ober Wüstegiersdorf | city | Poland | 50.67 | 16.38 | 1722 | 9801 | |
| Oberschwedeldorf | city | Poland | 50.43 | 16.55 | 1043 | 5954 | |
| Oberschwedelsdorf | city | Poland | 50.43 | 16.55 | 1043 | 5954 | |
| Obersteine | city | Poland | 50.55 | 16.48 | 1433 | 22857 | |
| Ocieszow | city | Poland | 50.43 | 16.43 | 1683 | 6144 | |
| Olbrachcice Wielkie | city | Poland | 50.60 | 16.77 | 944 | 10797 | |
| Oldrzychowice Klodzkie | city | Poland | 50.35 | 16.73 | 1213 | 3178 | |
| Olszany | city | Poland | 50.92 | 16.35 | 826 | 20210 | |
| Olszowiec | city | Poland | 50.63 | 16.55 | 2542 | 19533 | |
| Olszyniec | city | Poland | 50.72 | 16.37 | 1965 | 13212 | |
| Olszyny | city | Poland | 50.68 | 16.07 | 1689 | 4197 | |
| Omieciny | city | Poland | 50.78 | 16.48 | 833 | 20650 | |
| Opoczka | city | Poland | 50.30 | 16.53 | 1748 | 5223 | |
| Opoczka | city | Poland | 50.80 | 16.50 | 774 | 54354 | |
| Opoka | city | Poland | 50.80 | 16.25 | 1568 | 81559 | |
| Opolnic | city | Poland | 50.50 | 16.72 | 1158 | 7866 | |
| Orkany | city | Poland | 50.62 | 16.50 | 1541 | 28788 | |
| Orlowiec | city | Poland | 50.38 | 16.83 | 1574 | 5809 | |
| Orsk | city | Poland | 51.58 | 16.35 | 265 | 2432 | |
| Orłowiec | city | Poland | 50.38 | 16.83 | 1574 | 5809 | |
| Osina Mala | city | Poland | 50.58 | 17.15 | 734 | 4102 | |
| Osina Mała | city | Poland | 50.58 | 17.15 | 734 | 4102 | |
| Osinka | city | Poland | 50.58 | 17.07 | 974 | 6196 | |
| Ostroszowice | city | Poland | 50.63 | 16.63 | 1151 | 18429 | |
| Ostrężna | city | Poland | 50.68 | 17.12 | 797 | 5348 | |
| Otdrzychowice Klodzkie | city | Poland | 50.35 | 16.73 | 1213 | 3178 | |
| Otdrzychowice Kłodzkie | city | Poland | 50.35 | 16.73 | 1213 | 3178 | |
| Owiesno | city | Poland | 50.65 | 16.68 | 1194 | 13423 | |
| Ołdrzychowice Kłodzkie | city | Poland | 50.35 | 16.73 | 1213 | 3178 | |
| Ożary | city | Poland | 50.48 | 16.82 | 1033 | 6438 | |
| Ożary | city | Poland | 50.48 | 16.85 | 941 | 6418 |