Ostrov is a city located in the Karlovy Vary Region (Carlsbad Region) of the Czech Republic. It is situated in the western part of Czechia, in the area known for its spa towns and industrial heritage.
The city has historically been connected to the region's mining and manufacturing industries. Like many settlements in this part of Czechia, Ostrov's development has been shaped by its proximity to natural resources and its role within the broader economic landscape of western Bohemia.
As a municipality in the Karlovy Vary Region, Ostrov is part of an area characterized by forested hills and a climate that has supported both industrial activity and tourism related to the region's famous mineral springs and spa culture.