| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Obice | city | Poland | 50.68 | 20.58 | 921 | 4954 | |
| Obiechow | city | Poland | 50.57 | 19.87 | 944 | 3838 | |
| Oblegor | city | Poland | 50.95 | 20.45 | 872 | 8121 | |
| Oblekon | city | Poland | 50.32 | 21.02 | 554 | 6738 | |
| Oblęgórek | city | Poland | 50.97 | 20.48 | 1079 | 8300 | |
| Obozna Droga Maslow | city | Poland | 50.92 | 20.73 | 1345 | 16176 | |
| Oboźna Droga Masłów | city | Poland | 50.92 | 20.73 | 1345 | 16176 | |
| Obreczna | city | Poland | 50.87 | 21.38 | 849 | 13004 | |
| Ociesęki | city | Poland | 50.75 | 20.98 | 1003 | 4259 | |
| Odonów | city | Poland | 50.25 | 20.47 | 754 | 10219 | |
| Odrowaz | city | Poland | 51.13 | 20.65 | 1000 | 5244 | |
| Odrowazek | city | Poland | 51.10 | 20.65 | 944 | 4672 | |
| Odrowazek Nowy | city | Poland | 51.10 | 20.63 | 1026 | 5343 | |
| Odrzywol | city | Poland | 50.38 | 20.53 | 977 | 5490 | |
| Odrzywół | city | Poland | 50.38 | 20.53 | 977 | 5490 | |
| Ogarka | city | Poland | 50.78 | 20.07 | 866 | 5857 | |
| Ogrójce | city | Poland | 50.88 | 20.17 | 826 | 4733 | |
| Okol | city | Poland | 51.03 | 21.63 | 462 | 3366 | |
| Okopanki | city | Poland | 50.87 | 21.33 | 862 | 7431 | |
| Okrajki | city | Poland | 50.93 | 20.30 | 912 | 4419 | |
| Okreglica | city | Poland | 50.87 | 21.40 | 780 | 13426 | |
| Okrąglica | city | Poland | 50.87 | 21.40 | 780 | 13426 | |
| Oksa | city | Poland | 50.73 | 20.12 | 849 | 4252 | |
| Okół | city | Poland | 51.03 | 21.63 | 462 | 3366 | |
| Olbrachcice | city | Poland | 50.57 | 20.28 | 931 | 7038 | |
| Oleszno | city | Poland | 50.95 | 20.05 | 757 | 4162 | |
| Oleśnica | city | Poland | 50.45 | 21.07 | 613 | 5537 | |
| Olganow | city | Poland | 50.42 | 20.77 | 807 | 10335 | |
| Olszowka | city | Poland | 50.98 | 20.28 | 902 | 4376 | |
| Olszowka | city | Poland | 50.90 | 21.35 | 636 | 36652 | |
| Olszowka | city | Poland | 51.05 | 20.13 | 790 | 3087 | |
| Olszowka Stara | city | Poland | 50.52 | 20.17 | 889 | 4210 | |
| Opatkowice | city | Poland | 50.57 | 20.37 | 751 | 5546 | |
| Opatkowice | city | Poland | 50.40 | 20.33 | 944 | 4198 | |
| Opatkowice Drewniane | city | Poland | 50.57 | 20.37 | 751 | 5546 | |
| Opatkowice Murowane | city | Poland | 50.57 | 20.35 | 748 | 6140 | |
| Opatkowice Pojalowskie | city | Poland | 50.55 | 20.37 | 767 | 4738 | |
| Opatkowice Pojałowskie | city | Poland | 50.55 | 20.37 | 767 | 4738 | |
| Opatkowiczki | city | Poland | 50.33 | 20.48 | 784 | 6814 | |
| Opatowiec | city | Poland | 50.25 | 20.73 | 603 | 5496 | |
| Orlow | city | Poland | 50.28 | 20.05 | 967 | 10226 | |
| Orlowiny | city | Poland | 50.78 | 20.98 | 1194 | 5719 | |
| Orłowiny | city | Poland | 50.78 | 20.98 | 1194 | 5719 | |
| Orłów | city | Poland | 50.28 | 20.05 | 967 | 10226 | |
| Oselkow | city | Poland | 51.00 | 20.82 | 1102 | 9051 | |
| Osiczany | city | Poland | 49.85 | 20.00 | 1125 | 17135 | |
| Osieczany | city | Poland | 49.85 | 20.00 | 1125 | 17135 | |
| Osina Wielka | city | Poland | 50.58 | 17.08 | 977 | 5970 | |
| Osiny | city | Poland | 50.68 | 20.80 | 951 | 3802 | |
| Osiny | city | Poland | 51.20 | 21.10 | 666 | 6808 | |
| Osiny-Majorat | city | Poland | 51.20 | 21.08 | 662 | 6323 | |
| Osowka | city | Poland | 50.60 | 21.00 | 826 | 3739 | |
| Ossowa | city | Poland | 50.72 | 20.37 | 895 | 6812 | |
| Ossówka | city | Poland | 50.60 | 21.00 | 826 | 3739 | |
| Ostojów | city | Poland | 51.02 | 20.82 | 984 | 10595 | |
| Ostrovets | city | Poland | 50.93 | 21.40 | 544 | 74410 | |
| Ostrow | city | Poland | 50.87 | 20.10 | 938 | 4934 | |
| Ostrow | city | Poland | 50.32 | 20.70 | 590 | 4653 | |
| Ostrow | city | Poland | 50.75 | 20.53 | 820 | 9915 | |
| Ostrowce | city | Poland | 50.33 | 20.87 | 554 | 5154 | |
| Ostrowiec | city | Poland | 50.93 | 21.40 | 544 | 74410 | |
| Ostrowiec Swietokrzyski | city | Poland | 50.93 | 21.40 | 544 | 74410 | |
| Ostrozanka | city | Poland | 51.13 | 21.12 | 695 | 5628 | |
| Osówka Nowa | city | Poland | 50.60 | 21.00 | 826 | 3739 | |
| Owczary | city | Poland | 50.45 | 20.75 | 754 | 11798 |