Rusia
Munduko herrialdeak
O
- Oksovskiy
- Orlovskiy
- Orlik
- Opechenskiy Posad
- Oster
- Ol'ginka
- (Vsevolozhskiy Rayon) Osel’ki
- Ous
- Otradnoye
- Orud'yevo
- Oymyakon
- Ogodzha
- Ostrov Kharlov
- Oktyabr'skiy
- (Sovetskiy Rayon) Orekhovo-Borisovo Yuzhnoye
- (Nozhay-Yurtovskiy Rayon) Ozhi-Yurt
- (Nozhay-Yurtovskiy Rayon) Osi-Yurt
- (Medynskiy Rayon) Ozornoye
- (Maloyaroslavetskiy Rayon) Obolenskoye
- (Kolyvanskiy Rayon) Okhotkhosyaistvo
- (Chistoozernyy Rayon) Olkhovka
- (Chanovskiy Rayon) Osero-Karachi
- (Kuybyshevskiy Rayon) Osernyi
- (Chistoozernyy Rayon) Osernyi
- (Chesmenskiy Rayon) Ogneupornyy
- (Vyborgskiy Rayon) Ostrov
- (Naurskiy Rayon) Obil’nyy
- (Ardatovskiy Rayon) Oktyabr’skiy
- (Medynskiy Rayon) Obukhovo
- (Bor Urban Okrug) Ostankino