| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
3051  | Ostrovka Ostrovka,Urochishche Ostrovka,Urochishhe Ostrovka,Урочище Островка | Russia, Orenburg Oblast | area | N 53° 18′ 0'' | E 54° 15′ 0'' |
| 3052 | Urochishche Ostrov Ostrov,Urochishche Ostrov,Urochishhe Ostrov,Остров,Урочище Остров | Russia, Vologda Oblast | area | N 58° 57′ 20'' | E 35° 28′ 46'' |
3053  | Ostrov  Ostrau,Ostrov,Ostrova,Ostrovia,Ostrow,ao si te luo fu,awstrwf,awstrwf awblast pskwf,oseuteulopeu,os... | Russia, Pskov Oblast | seat of a second-order administrative division population 24,500 | N 57° 20′ 37'' | E 28° 21′ 13'' |
3054  | Ostrogozhsky District Ostrogozhskij Rajon,Ostrogozhskiy Rayon,Ostrogozhsky District,Острогожский Район | Russia, Voronezh Oblast Ostrogozhsky District | second-order administrative division population 58,309 | N 50° 54′ 43'' | E 39° 3′ 9'' |
| 3055 | Ostashkovsky District Ostashkovskij Rajon,Ostashkovskiy Rayon,Ostashkovsky District,Осташковский Район | Russia, Tver Oblast Ostashkovsky District | second-order administrative division | N 57° 10′ 0'' | E 33° 15′ 0'' |
| 3056 | Urochishche Ostashkino Ostashkin,Razvaliny Ostashkino,Urochishche Ostashkino,Urochishhe Ostashkino,Урочище Осташкино | Russia, Rostov | area | N 48° 31′ 25'' | E 40° 53′ 53'' |
| 3057 | Ostashëvo Ostaschowo,Ostashevo,Ostashjovo,Ostashovo,Ostashëvo,Ostasjevo,Осташево,Осташёво | Russia, Moscow Oblast Volokolamskiy Rayon | populated place population 2,743 | N 55° 51′ 38'' | E 35° 51′ 50'' |
| 3058 | Ostankinskiy Novoostankino,Ostankino,Ostankinskij,Ostankinskiy,Pushkinskoye,Останкинский | Russia, Moscow | section of populated place population 60,000 | N 55° 49′ 46'' | E 37° 36′ 57'' |
| 3059 | Orshanskiy Rayon Orshanskij Rajon,Orshanskiy Rayon,Оршанский Район | Russia, Mariy-El Republic Orshanskiy Rayon | second-order administrative division | N 56° 53′ 11'' | E 48° 1′ 35'' |
| 3060 | Orlovskiy Orlovka,Orlovskaya,Orlovskij,Orlovskiy,Орловский | Russia, Rostov | seat of a second-order administrative division population 19,325 | N 46° 52′ 27'' | E 42° 3′ 8'' |
| 3061 | Urochishche Orlovskiy Orlovka,Urochishche Orlovskiy,Urochishhe Orlovskij,Орловка,Урочище Орловский | Russia, Voronezh Oblast | area | N 51° 30′ 8'' | E 40° 43′ 38'' |
3062  | Ozero Oriyarvi Orijaervi,Orijärvi,Ozero Orijarvi,Ozero Oriyar,Ozero Oriyarvi,Озеро Ориярви | Russia, Murmansk | lake | N 66° 46′ 37'' | E 30° 53′ 14'' |
| 3063 | Urochishche Oritsel’kya Oricel'kja,Oriselkae,Oriselkä,Oritsel'kya,Oritsel’kya,Urochishche Oritsel'kya,Urochishche Oritsel’ky... | Russia, Karelia | area | N 61° 20′ 22'' | E 31° 37′ 6'' |
| 3064 | Orichevsky District Orichevskij Rajon,Orichevskiy Rayon,Orichevsky District,Оричевский Район | Russia, Kirov Oblast Orichevsky District | second-order administrative division population 29,289 | N 58° 19′ 44'' | E 48° 59′ 38'' |
| 3065 | Urochishche Orël Krasny Orel,Krasnyy Orel,Orel,Orël,Urochishche Orel,Urochishche Orël,Urochishhe Orjol,Урочище Орёл | Russia, Yaroslavl Oblast | area | N 58° 10′ 14'' | E 37° 35′ 13'' |
| 3066 | Orekhovo-Zuyevskiy Gorodskoy Okrug Orekhovo-Zuevskij Gorodskoj Okrug,Orekhovo-Zuevskij Rajon,Orekhovo-Zuyevskiy Gorodskoy Okrug,Orekhov... | Russia, Moscow Oblast Orekhovo-Zuyevskiy Gorodskoy Okrug | second-order administrative division | N 55° 41′ 16'' | E 39° 2′ 26'' |
| 3067 | Yandi Jandi,Jandin-KIotar,Jandy,Nu'ttakh-KIotar,Nuttax-Khotar,Nüttax-Khotar,Orekhovo,Orekhovsk,Orexovo,Ore... | Russia, Chechnya | populated place | N 43° 7′ 45'' | E 45° 19′ 46'' |
| 3068 | Ozero Ordovo Ozero Ordovo,Vozera Ardova,Vozyera Ardova,Возера Ардова,Озеро Ордово | Russia, Pskov Oblast | lake | N 55° 51′ 27'' | E 29° 52′ 0'' |
| 3069 | Oranzherei Oranjereinyi Promysel,Oranzherei,Oranzherey,Oranzhereynoye,Oranzjerei,Оранжереи | Russia, Astrakhan Oblast | populated place population 4,367 | N 45° 50′ 51'' | E 47° 33′ 58'' |
| 3070 | Opochka Opochka,Opotschka,Opotsjka,Pechka,Опочка | Russia, Pskov Oblast | seat of a second-order administrative division population 13,548 | N 56° 42′ 52'' | E 28° 39′ 46'' |
| 3071 | Opochetsky District Opochetskij Rajon,Opochetskiy Rayon,Opochetsky District,Опочетский Район | Russia, Pskov Oblast Opochetsky District | second-order administrative division | N 56° 40′ 0'' | E 28° 50′ 0'' |
| 3072 | Oparinsky District Oparinskij Rajon,Oparinskiy Rayon,Oparinsky District,Опаринский Район | Russia, Kirov Oblast Oparinsky District | second-order administrative division population 9,440 | N 59° 39′ 58'' | E 47° 49′ 48'' |
| 3073 | Ozero Ontulya-Kangas Ontulan-Kangasjarvi,Ozero Ontulja-Kangas,Ozero Ontulya Khangas,Ozero Ontulya-Kangas,Озеро Онтуля-Кан... | Russia, Murmansk | lake | N 66° 36′ 56'' | E 31° 45′ 54'' |
| 3074 | Onezhsky District Onezhskij Rajon,Onezhskiy Rayon,Onezhsky District,Онежский Район | Russia, Arkhangelskaya Onezhsky District | second-order administrative division | N 63° 20′ 0'' | E 38° 0′ 0'' |
| 3075 | Onezhskiy Bereg Bereg Lyamitskiy,Lyamitski Coast,Lyamitskiy Bereg,Lyamtzi Coast,Onezhskij Bereg,Onezhskiy Bereg,Onye... | Russia, Arkhangelskaya | coast | N 64° 40′ 0'' | E 36° 50′ 0'' |
| 3076 | Onega AEaeninen,Onega,Ääninen,Онега | Russia, Arkhangelskaya | populated place population 22,693 | N 63° 54′ 20'' | E 38° 5′ 58'' |
| 3077 | Omutninsky District Omutninskij Rajon,Omutninskiy Rayon,Omutninsky,Omutninsky District,Омутнинский Район | Russia, Kirov Oblast Omutninsky District | second-order administrative division population 40,242 | N 58° 50′ 0'' | E 52° 20′ 0'' |
| 3078 | Ozero Ol’shanskoye Ozero Ol'shanskoe,Ozero Ol'shanskoye,Ozero Ol’shanskoye,Ozero Pakha-Yarvi,Pahajaervi,Pahajärvi,Озеро... | Russia, Leningradskaya Oblast' | lake | N 60° 23′ 8'' | E 29° 48′ 1'' |
| 3079 | Olonetskiy Rayon Aunuksen piiri,Olonetskij Rajon,Olonetskiy Rayon,Олонетский Район | Russia, Karelia Olonetskiy Rayon | second-order administrative division | N 61° 6′ 3'' | E 32° 49′ 49'' |
| 3080 | Olkhovsky District Ol'khovskij Rajon,Ol'khovskiy Rayon,Olkhovsky District,Ol’khovskiy Rayon,Ольховский Район | Russia, Volgograd Oblast Olkhovsky District | second-order administrative division | N 49° 49′ 24'' | E 44° 32′ 41'' |
| 3081 | Ol'khovka Ol'khovka,Olkhovka,Ol’khovka,Urochishche Ol'khovka,Urochishche Ol’khovka,Urochishhe Ol'khovka,Ольхов... | Russia, Arkhangelskaya | area | N 60° 57′ 31'' | E 48° 8′ 19'' |
| 3082 | Olkhovatsky District Ol'khovatskij Rajon,Ol'khovatskiy Rayon,Olkhovatsky District,Ol’khovatskiy Rayon,Ольховатский Район | Russia, Voronezh Oblast Olkhovatsky District | second-order administrative division | N 50° 19′ 43'' | E 39° 14′ 31'' |
| 3083 | Ol’gino Ol'gino,Ol'inno,Olgino,Ol’gino,Ol’inno,Ольгино,Օլգինո | Russia, Nizhny Novgorod Oblast Nizhny Novgorod Urban Okrug | populated place | N 56° 13′ 10'' | E 43° 55′ 59'' |
| 3084 | Ozero Olenino Ozero Khassin-Lampi,Ozero Olenino,Suuri Hassinlampi,Озеро Оленино | Russia, Leningradskaya Oblast' | lake | N 60° 49′ 50'' | E 30° 0′ 44'' |
| 3085 | Okulovsky District Okulovskij Rajon,Okulovskiy Rayon,Okulovsky District,Окуловский Район | Russia, Novgorod Oblast Okulovsky District | second-order administrative division population 21,401 | N 58° 27′ 50'' | E 33° 10′ 35'' |
| 3086 | Okulovka Akulauka,Okoelovka,Okoulovka,Okulovka,Okulowka,Okułowka,Okúlovka,ao ku luo fu ka,awkwlwfka,awkylwfka... | Russia, Novgorod Oblast | seat of a second-order administrative division population 13,852 | N 58° 24′ 28'' | E 33° 17′ 18'' |
| 3087 | Oktyabr’skiy Rayon Oktjabr'skij Rajon,Oktyabr'skiy Rayon,Oktyabr’skiy Rayon,Октябрьский Район | Russia, St.-Petersburg | historical second-order administrative division | N 59° 56′ 0'' | E 30° 17′ 0'' |
| 3088 | Oktyabrsky District Bogovarovskij Rajon,Bogovarovskiy Rayon,Oktjabr'skij Rajon,Oktyabr'skiy Rayon,Oktyabrsky District,Ok... | Russia, Kostroma Oblast Oktyabrsky District | second-order administrative division | N 59° 0′ 3'' | E 47° 7′ 46'' |
| 3089 | Nurlatsky District Nurlat Rajony,Nurlat Rayoniy,Nurlat Rayonıy,Nurlatskij Rajon,Nurlatskiy Rayon,Nurlatsky District,Okt... | Russia, Tatarstan Republic Nurlatsky District | second-order administrative division | N 54° 35′ 32'' | E 50° 33′ 33'' |
| 3090 | Oktyabrsky District Oktjabr'skij Rajon,Oktyabr'skiy Rayon,Oktyabrsky District,Oktyabr’skiy Rayon,Октябрьский Район | Russia, Kursk Oblast Oktyabrsky District | second-order administrative division | N 51° 42′ 16'' | E 35° 51′ 7'' |
| 3091 | Oktyabrsky District Oktjabr'skij Rajon,Oktyabr'skiy Rayon,Oktyabrsky District,Oktyabr’skiy Rayon,Voroshilovskiy Rayon,Ок... | Russia, Volgograd Oblast Oktyabrsky District | second-order administrative division | N 48° 3′ 31'' | E 43° 37′ 40'' |
| 3092 | Oktyabr’skiy Rayon Oktjabr'skij Rajon,Oktyabr'skiy Rayon,Oktyabr’skiy Rayon,Октябрьский Район | Russia, Kalmykiya Republic Oktyabr’skiy Rayon | second-order administrative division | N 47° 34′ 10'' | E 45° 28′ 55'' |
| 3093 | Oktyabrsky Oktjabr'skij,Oktyabr'skiy,Oktyabrsky,Oktyabr’skiy,Октябрьский | Russia, Moscow Oblast | populated place population 11,000 | N 55° 36′ 29'' | E 37° 58′ 38'' |
| 3094 | Okskiy Zapovednik Okskij Zapovednik,Okskiy Zapovednik,Окский Заповедник | Russia, Ryazan Oblast | reserve | N 54° 44′ 57'' | E 40° 45′ 41'' |
| 3095 | Okshtama Okshtama,Okshtoma,Okstomin Kirkonkyla,Okštomin Kirkonkyla,Pogost Okshtamskiy,Окштама | Russia, Vologda Oblast | area | N 60° 59′ 0'' | E 37° 48′ 0'' |
| 3096 | Ozero Okhta Ohtajaervi,Ohtajärvi,Ozero Okhta,Ozero Okhtan"yarvi,Ozero Okhtanujarvi,Ozero Okhtan”yarvi,Озеро Охта... | Russia, Karelia | lake | N 65° 30′ 0'' | E 30° 47′ 0'' |
| 3097 | Okhansk Akhansk,Ochansk,Ohansk,Ohanszk,Okhannoj,Okhansk,Oxansk,Oĥansk,ao han si ke,awkhansk,Аханск,Оханнӧй,О... | Russia, Perm Krai | seat of a second-order administrative division population 7,920 | N 57° 42′ 53'' | E 55° 23′ 26'' |
| 3098 | Oka River Afon Oka,Joka,Khura Atal,Occa,Oka,Oka Nehri,Oka River,Oka cayi,Oka ibaia,Oka çayı,Okao,Okà,Potamos O... | Russia, | stream | N 56° 19′ 52'' | E 43° 58′ 48'' |
| 3099 | Odintsy Odentsy,Odincy,Odintsy,Одинцы | Russia, Kaluga Oblast Medynsky District | populated place | N 55° 7′ 35'' | E 35° 48′ 44'' |
| 3100 | Odintsovskiy Gorodskoy Okrug Kuntsevskiy Rayon,Kuntsëvskiy Rayon,Odincovskij Gorodskoj Okrug,Odincovskij Rajon,Odintsovskiy Gorod... | Russia, Moscow Oblast Odintsovskiy Gorodskoy Okrug | second-order administrative division | N 55° 40′ 0'' | E 36° 55′ 0'' |
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