Ostrov () is the name of several inhabited localities in Russia.
Bryansk Oblast
As of 2010, one rural locality in Bryansk Oblast bears this name: Ostrov, Bryansk Oblast, a village in Olsufyevsky Selsoviet of Zhukovsky District
Ivanovo Oblast
As of 2010, two rural localities in Ivanovo Oblast bear this name: Ostrov, Komsomolsky District, Ivanovo Oblast, a village in Komsomolsky District Ostrov, Verkhnelandekhovsky District, Ivanovo Oblast, a village in Verkhnelandekhovsky District
Kaluga Oblast
As of 2010, two rural localities in Kaluga Oblast bear this name: Ostrov, Zhizdrinsky District, Kaluga Oblast, a village in Zhizdrinsky District Ostrov, Zhukovsky District, Kaluga Oblast, a selo in Zhukovsky District
Republic of Karelia
As of 2010, one rural locality in the Republic of Karelia bears this name: Ostrov, Republic of Karelia, a village in Pudozhsky District
Kirov Oblast
As of 2010, three rural localities in Kirov Oblast bear this name: Ostrov, Kumensky District, Kirov Oblast, a village in Vichevsky Rural Okrug of Kumyonsky District Ostrov, Zarechensky Rural Okrug, Podosinovsky District, Kirov Oblast, a village in Zarechensky Rural Okrug of Podosinovsky District Ostrov, Podosinovets, Podosinovsky District, Kirov Oblast, a village under the administrative jurisdiction of the urban-type settlement of Podosinovets, Podosinovsky District
Leningrad Oblast
As of 2010, eight rural localities in Leningrad Oblast bear this name: Ostrov, Bolshedvorskoye Settlement Municipal Formation, Boksitogorsky District, Leningrad Oblast, a village in Bolshedvorskoye Settlement Municipal Formation of Boksitogorsky District Ostrov, Radogoshchinskoye Settlement Municipal Formation, Boksitogorsky District, Leningrad Oblast, a village in Radogoshchinskoye Settlement Municipal Formation of Boksitogorsky District Ostrov, Gatchinsky District, Leningrad Oblast, a village under the administrative jurisdiction of Druzhnogorskoye Settlement Municipal Formation of Gatchinsky District Ostrov, Kirovsky District, Leningrad Oblast, a village in Sukhovskoye Settlement Municipal Formation of Kirovsky District Ostrov, Tikhvinsky District, Leningrad Oblast, a village in Melegezhskoye Settlement Municipal Formation of Tikhvinsky District Ostrov, Khvalovskoye Settlement Municipal Formation, Volkhovsky District, Leningrad Oblast, a village in Khvalovskoye Settlement Municipal Formation of Volkhovsky District Ostrov, Selivanovskoye Settlement Municipal Formation, Volkhovsky District, Leningrad Oblast, a village in Selivanovskoye Settlement Municipal Formation of Volkhovsky District Ostrov, Vyborgsky District, Leningrad Oblast, a logging depot settlement under the administrative jurisdiction of Kamennogorskoye Settlement Municipal Formation of Vyborgsky District
Moscow Oblast
As of 2010, two rural localities in Moscow Oblast bear this name: Ostrov, Leninsky District, Moscow Oblast, a selo in Molokovskoye Rural Settlement of Leninsky District Ostrov, Taldomsky District, Moscow Oblast, a village in Yermolinskoye Rural Settlement of Taldomsky District
Novgorod Oblast
As of 2010, eleven rural localities in Novgorod Oblast bear this name: Ostrov, Moykinskoye Settlement, Batetsky District, Novgorod Oblast, a village in Moykinskoye Settlement of Batetsky District Ostrov, Peredolskoye Settlement, Batetsky District, Novgorod Oblast, a village in Peredolskoye Settlement of Batetsky District Ostrov, Borovichsky District, Novgorod Oblast, a village in Zhelezkovskoye Settlement of Borovichsky District Ostrov, Demyansky District, Novgorod Oblast, a village in Polnovskoye Settlement of Demyansky District Ostrov, Khvoyninsky District, Novgorod Oblast, a village in Dvorishchenskoye Settlement of Khvoyninsky District Ostrov, Lyubytino, Lyubytinsky District, Novgorod Oblast, a village under the administrative jurisdiction of the urban-type settlement of Lyubytino, Lyubytinsky District Ostrov, Nebolchi, Lyubytinsky District, Novgorod Oblast, a village under the administrative jurisdiction of the urban-type settlement of Nebolchi, Lyubytinsky District Ostrov, Pestovsky District, Novgorod Oblast, a village in Bogoslovskoye Settlement of Pestovsky District Ostrov, Dubrovskoye Settlement, Soletsky District, Novgorod Oblast, a village in Dubrovskoye Settlement of Soletsky District Ostrov, Vybitskoye Settlement, Soletsky District, Novgorod Oblast, a village in Vybitskoye Settlement of Soletsky District Ostrov, Volotovsky District, Novgorod Oblast, a village in Slavitinskoye Settlement of Volotovsky District