Ostrovsky District is an administrative and municipal district (raion), one of the twenty-four in Pskov Oblast, Russia. It is located in the west of the oblast and borders with Pskovsky District in the north, Porkhovsky District in the northeast, Novorzhevsky District in the southeast, Pushkinogorsky and Krasnogorodsky Districts in the south, Pytalovsky District in the west, and with Palkinsky District in the northwest. The area of the district is . Its administrative center is the town of Ostrov. Population: 36,685 (2002 Census); The population of Ostrov accounts for 69.7% of the district's total population.