Pomarkku (Swedish: Påmark) is a municipality in the region of Lounais-Suomi. It is located in the Satakunta region. The municipality has a population of 2,144 (31 January 2019) and covers an area of 332.05 square kilometres (128.21 sq mi) of which 30.95 km2 (11.95 sq mi) is water. The population density is 7.12 inhabitants per square kilometre (18.4/sq mi).
The municipality is unilingually Finnish.