Dewa Province (出羽国 Dewa no kuni?) is an old province of Japan, comprising modern-day Yamagata Prefecture and Akita Prefecture, except for the city of Kazuno and the town of Kosaka. It was sometimes called Ushū (羽州?).
In 708 CE, the land of Dewa-no kuni was administratively separated from Echigo; and the ambit of the province was gradually extended to the north as the Japanese pushed back the indigenous people of northern Honshū.
In 712, Dewa Province was administratively realigned in relation to Mutsu Province (陸奥国); and Empress Gemmei's Daijō-kan continued to organize other cadastral changes in the provincial map of the Nara Period, as in 713 when Mimasaka Province (美作国) was divided from Bizen Province (備前国); Hyūga Province (日向国) was sundered from Osumi Province (大隈国); and Tamba Province (丹波国) was severed from Tango Province (丹後国).
- Kōdansha. (1993). "Akitajō" in Japan: an Illustrated Encyclopedia, Vol. 1, p. 29.
- Titsingh, Isaac. (1834). Annales des empereurs du japon, p. 64., p. 64, at Google Books
- Terry, Thomas Philip. (1914). Terry's Japanese Empire, p. 324., p. 324, at Google Books
- Nussbaum, Louis-Frédéric. (2005). "Provinces and prefectures" in Japan Encyclopedia, p. 780.
- Kōdansha. (1993). Japan: an Illustrated Encyclopedia. Tokyo: Kōdansha; OCLC 193352222
- Nussbaum, Louis-Frédéric and Käthe Roth. (2005). Japan encyclopedia. Cambridge: Harvard University Press. 10-ISBN 0-674-01753-6; 13-ISBN 978-0-674-01753-5; OCLC 58053128
- Terry, Thomas Philip. (1914). Terry's Japanese Empire: including Korea and Formosa, with Chapters on Manchuria, the Trans-Siberian Railway, and the Chief Ocean Routes to Japan: a Guidebook for Travelers. New York: Houghton Mifflin. OCLC 123254449
- Titsingh, Isaac. (1834). Annales des empereurs du Japon (Nihon Odai Ichiran). Paris: Royal Asiatic Society, Oriental Translation Fund of Great Britain and Ireland. OCLC 5850691.
Media related to Dewa Province at Wikimedia Commons