Northern Kalapuya language

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Northern Kalapuya
Region Northwest Oregon
Extinct 1937
  • Tualatin-Yamhill
  • Tualatin
  • Yamhill
Language codes
ISO 639-3 nrt
Glottolog tual1242[1]

Northern Kalapuyan is a Kalapuyan language indigenous to northwestern Oregon in the United States. It was spoken by Kalapuya groups in the northern Willamette Valley southwest of present-day Portland.

Two distinct dialects of the languages have been identified. The Tualatin dialect (Tfalati, Atfalati) was spoken along the Tualatin River. The Yamhill (Yamell) dialect was spoken along the Yamhill River. The language is closely related to Central Kalapuya, spoken by related groups in the central and southern Willamette Valley.

Northern Kalapuya is now extinct.


  1. ^ Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, eds. (2017). "Tualatin-Yamhill". Glottolog 3.0. Jena, Germany: Max Planck Institute for the Science of Human History.