奥斯塔什科夫 （俄语：Оста́шков）是俄罗斯特维尔州西部的一个城市，临谢利格尔湖，西距特维尔199公里。2002年人口20,660人。

1770年建市。

Ostashkov (Russian:Оста́шков) is a town and the administrative center of Ostashkovsky District in Tver Oblast, Russia, located on a peninsula at the southern shore of Lake Seliger, 199 kilometers (124 mi) west of Tver, the administrative center of the oblast. Population: 18,088(2010 Census);20,660(2002 Census);27,401(**** Census).