The
Slovincian language became extinct in the
20th century. It was one of the
Lekhitic languages. Its users lived in parishes of Schmolsin and Garde in
Pomerania in present-day
Poland.
Slovincian was so closely related to
Kashubian that it must be regarded as its dialect, but it is conventionally treated separately. Slovincians regarded themseves as Kashubs-Lutherans and their language as Kashubian.