Kościerzyna (Polish: [kɔɕt͡ɕɛˈʐɨna] ; Pomeranian and Kashubian: Kòscérzëna; former German: Berent [ˈbɛʁɛnt] ) is a town in Kashubia in Gdańsk Pomerania region, northern Poland, with 23,327 inhabitants as of June 2023. It has been the capital of Kościerzyna County in Pomeranian Voivodeship since 1999; previously it was in Gdańsk Voivodeship from 1975 to 1998.