Southern Tsimshian, or Sgüüx̣s, is the southern dialect of the Tsimshian language, spoken by the Gitga'ata and Kitasoo Tsimshians in Klemtu, B.C.. It went extinct with the death of the last remaining speaker, Violet Neasloss.Sgüüx̣s has been described as a highly conservative dialect of Coast Tsimshian.