Kaszubians (or Kashubs) (in Kashubian: Kaszëbi, Polish: Kaszubi, German: Kaschuben) are a West Slavic ethnic group in Pomerelia, north-central Poland.

Other variations of the name are Kassubians, Cassubians, or (sometimes) Kashubes.

Their settlement area is referred to as Kashubia (Kashubian: Kaszëbë, Polish: Kaszuby, German: Kaschubei, Kaschubien).They speak Kashubian, classified either as a language or a Polish dialect.

In analogy to the linguistic classification, Kashubians are considered either an ethnic or a linguistic group.

Slovincians are grouped with the Kashubians as Pomeranians.

Similarly, the Slovincian and Kashubian languages are grouped as the Pomeranian language, with Slovincian being either a closely related language or a Kashubian dialect.