| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Obval | city | Penzenskaya Oblast' | Russia | 52.75 | 43.25 | 830 | 1600 |
| Ogarevka | city | Penzenskaya Oblast' | Russia | 52.58 | 44.94 | 830 | 747 |
| Ogarewka | city | Penzenskaya Oblast' | Russia | 52.49 | 45.42 | 830 | 872 |
| Ogarëvka | city | Penzenskaya Oblast' | Russia | 52.49 | 45.42 | 830 | 872 |
| Oktyabr' | city | Penzenskaya Oblast' | Russia | 53.49 | 44.00 | 830 | 149 |
| Oktyabr' | city | Penzenskaya Oblast' | Russia | 53.47 | 44.91 | 830 | 699 |
| Oktyabr'skaya | city | Penzenskaya Oblast' | Russia | 52.85 | 44.94 | 856 | 1011 |
| Oktyabr'skaya | city | Penzenskaya Oblast' | Russia | 53.07 | 43.07 | 830 | 1336 |
| Oktyabr'skiy | city | Penzenskaya Oblast' | Russia | 53.07 | 43.07 | 830 | 1336 |
| Oktyabr'skiy | city | Penzenskaya Oblast' | Russia | 52.45 | 44.12 | 830 | 6337 |
| Oktyabr'skiy | city | Penzenskaya Oblast' | Russia | 53.13 | 44.19 | 830 | 298 |
| Oktyabr'skoye | city | Penzenskaya Oblast' | Russia | 52.87 | 46.49 | 830 | 1490 |
| Oktyabr'skoye | city | Penzenskaya Oblast' | Russia | 52.45 | 44.12 | 830 | 6337 |
| Oktyabr’ | city | Penzenskaya Oblast' | Russia | 53.49 | 44.00 | 830 | 149 |
| Oktyabr’ | city | Penzenskaya Oblast' | Russia | 53.47 | 44.91 | 830 | 699 |
| Oktyabr’skaya | city | Penzenskaya Oblast' | Russia | 52.85 | 44.94 | 856 | 1011 |
| Oktyabr’skaya | city | Penzenskaya Oblast' | Russia | 53.07 | 43.07 | 830 | 1336 |
| Oktyabr’skiy | city | Penzenskaya Oblast' | Russia | 52.45 | 44.12 | 830 | 6337 |
| Oktyabr’skiy | city | Penzenskaya Oblast' | Russia | 53.13 | 44.19 | 830 | 298 |
| Oktyabr’skiy | city | Penzenskaya Oblast' | Russia | 53.07 | 43.07 | 830 | 1336 |
| Oktyabr’skoye | city | Penzenskaya Oblast' | Russia | 52.87 | 46.49 | 830 | 1490 |
| Oktyabr’skoye | city | Penzenskaya Oblast' | Russia | 52.45 | 44.12 | 830 | 6337 |
| Ol'gina-Macha | city | Penzenskaya Oblast' | Russia | 52.68 | 43.66 | 830 | 1677 |
| Ol'khovka | city | Penzenskaya Oblast' | Russia | 53.52 | 42.43 | 830 | 1490 |
| Ol'kovyy | city | Penzenskaya Oblast' | Russia | 53.34 | 43.47 | 830 | 1341 |
| Ol'shanka | city | Penzenskaya Oblast' | Russia | 52.48 | 43.18 | 830 | 1277 |
| Ol'shanka | city | Penzenskaya Oblast' | Russia | 52.86 | 43.09 | 830 | 1341 |
| Ol'shanka | city | Penzenskaya Oblast' | Russia | 53.08 | 45.02 | 830 | 36644 |
| Ol'shanka | city | Penzenskaya Oblast' | Russia | 53.48 | 42.93 | 830 | 1219 |
| Olenevka | city | Penzenskaya Oblast' | Russia | 52.98 | 44.88 | 830 | 866 |
| Olsjanka | city | Penzenskaya Oblast' | Russia | 53.48 | 42.93 | 830 | 1219 |
| Ol’gina-Macha | city | Penzenskaya Oblast' | Russia | 52.68 | 43.66 | 830 | 1677 |
| Ol’khovka | city | Penzenskaya Oblast' | Russia | 53.52 | 42.43 | 830 | 1490 |
| Ol’kovyy | city | Penzenskaya Oblast' | Russia | 53.34 | 43.47 | 830 | 1341 |
| Ol’shanka | city | Penzenskaya Oblast' | Russia | 53.48 | 42.93 | 830 | 1219 |
| Ol’shanka | city | Penzenskaya Oblast' | Russia | 52.48 | 43.18 | 830 | 1277 |
| Ol’shanka | city | Penzenskaya Oblast' | Russia | 52.86 | 43.09 | 830 | 1341 |
| Ol’shanka | city | Penzenskaya Oblast' | Russia | 53.08 | 45.02 | 830 | 36644 |
| Orlovka | city | Penzenskaya Oblast' | Russia | 52.56 | 44.32 | 830 | 298 |
| Orlovka | city | Penzenskaya Oblast' | Russia | 53.28 | 44.52 | 912 | 1192 |
| Orlovka | city | Penzenskaya Oblast' | Russia | 53.94 | 43.69 | 830 | 770 |
| Orlovka | city | Penzenskaya Oblast' | Russia | 53.44 | 42.89 | 830 | 1220 |
| Ostrovtsy | city | Penzenskaya Oblast' | Russia | 52.82 | 44.45 | 830 | 1490 |
| Otdeleniye | city | Penzenskaya Oblast' | Russia | 53.16 | 44.33 | 839 | 480 |
| Otdeleniye | city | Penzenskaya Oblast' | Russia | 52.99 | 44.82 | 830 | 298 |
| Otdeleniye | city | Penzenskaya Oblast' | Russia | 52.57 | 46.04 | 830 | 894 |
| Otdeleniye Cherentsovskoye | city | Penzenskaya Oblast' | Russia | 53.16 | 44.33 | 839 | 480 |
| Otdeleniye Nomer Dva Olenevskiy | city | Penzenskaya Oblast' | Russia | 52.99 | 44.82 | 830 | 298 |
| Otdeleniye Sovkhoza | city | Penzenskaya Oblast' | Russia | 53.69 | 46.15 | 1013 | 9530 |
| Otdeleniye Sovkhoza Zelenodol'skiy | city | Penzenskaya Oblast' | Russia | 53.69 | 46.15 | 1013 | 9530 |
| Otdeleniye Sovkhoza Zelenodol’skiy | city | Penzenskaya Oblast' | Russia | 53.69 | 46.15 | 1013 | 9530 |
| Otkormsovkhoz | city | Penzenskaya Oblast' | Russia | 53.20 | 46.70 | 1020 | 1966 |
| Otorma | city | Penzenskaya Oblast' | Russia | 53.54 | 42.51 | 830 | 1490 |
| Otrada | city | Penzenskaya Oblast' | Russia | 53.22 | 44.38 | 830 | 1152 |
| Otrada | city | Penzenskaya Oblast' | Russia | 52.65 | 44.87 | 830 | 1200 |
| Otradnyy | city | Penzenskaya Oblast' | Russia | 53.26 | 44.29 | 830 | 923 |
| Ovcharnoye | city | Penzenskaya Oblast' | Russia | 53.52 | 43.75 | 830 | 5692 |
| Ovcharnya | city | Penzenskaya Oblast' | Russia | 53.63 | 42.97 | 830 | 1192 |
| Ozerka | city | Penzenskaya Oblast' | Russia | 53.49 | 46.46 | 974 | 1190 |
| Ozerki | city | Penzenskaya Oblast' | Russia | 52.63 | 43.32 | 830 | 1603 |
| Ozerki | city | Penzenskaya Oblast' | Russia | 53.41 | 44.23 | 830 | 1192 |
| Ozerki | city | Penzenskaya Oblast' | Russia | 53.49 | 46.46 | 974 | 1190 |
| Ozerki | city | Penzenskaya Oblast' | Russia | 52.83 | 45.97 | 938 | 1043 |