Wymysorys, also known as Vilamovian or Wilamowicean, is a West Germanic language spoken by the Vilamovian ethnic minority in the small town of Wilamowice, Silesian Voivodeship, Poland, on the border between Silesia and Lesser Poland, near Bielsko-Biała. It is considered an endangered language, possibly the most so of any of the Germanic languages. There are probably fewer than 20 native users of Wymysorys, virtually all bilingual; the majority are elderly.

Wilamowice is a rural town in southern Poland, situated in the Bielsko County, Silesian Voivodeship. The town is inhabited by a Germanic ethnic group of Vilamovians, who speak the highly endangered Wymysorys language.