Kokemäki Castle (Finnish: Kokemäen linna, Swedish: Kumo slott) was a Medieval castle in Kokemäki in the province of Satakunta in Finland. The time of its foundation is unclear, but the castle was most likely completed in 1324–25. It was demolished in 1367 by order of King Albert, as the local residents complained of heavy taxation for the upkeep of the castle. The castle was located on the Linnaluoto Island in the river Kokemäenjoki.