Kashubia or Cassubia (Kashubian: Kaszëbë or Kaszëbskô; Polish: Kaszuby [kaˈʂubɨ] ⓘ; German: Kaschubei or Kaschubien) is an ethnocultural region in the historic Eastern Pomerania (Pomerelia) region of northern Poland.

The unofficial self-description of "capital city of Kashubia" has long been contested by Kartuzy and Kościerzyna.

[citation needed] Located west of Gdańsk (inclusive of all but the easternmost district) and the mouth of the Vistula river, it is inhabited by members of the Kashubian ethnic group.

According to the 1999 basic study Geografia współczesnych Kaszub (Geography of present-day Kashubia) by the Gdańsk scholar Jan Mordawski 43 municipalities (gminas) of the Pomeranian Voivodeship have a Kashubian share of at least one third of the total population:[1] Although there are no legal regulations regarding the use of Kashubian symbols, the griffin, i.e. a mythical animal, derived from antiquity, is considered the emblem and symbol of the Kashubians.

Herring are the most widely used fish due to their high numbers in the region.

It was historically considered a dialect of Polish,[10] but is now officially recognized as a regional language and enjoys legal protection as such.