Tjörn Municipality, Tjörns kommun, is a municipality on the island of Tjorn in Västra Götaland County, western Sweden. The municipality covers an area of 167.3 km². Of the total population of 14733, 7543 are male, and 7190 are female. The population density of the community is 88 inhabitants per km². The municipal seat is located in Skärhamn.
