Izumo Province (出雲国 Izumo-no-kuni?) was an old province of Japan which today consists of the eastern part of Shimane Prefecture. It was sometimes called Unshū (雲州?). The province is in the Chūgoku Region.
It was one of the regions of ancient Japan where major political powers arose. A powerful clan of Izumo (Idumo is an obsolete romanization) constituted an independent polity, but during the 4th century it was absorbed due to the expansion of the state of Yamato, within which it assumed the role of a sacerdotal domain.
Even today, the Izumo Shrine constitutes (as does the Grand Shrine of Ise) one of the more important sacred places of Shinto: it is dedicated to kami, especially to Ōkuninushi (Ō-kuni-nushi-no-mikoto), mythical progeny of Susa-no-Ō and all the clans of Izumo. The mythological mother of Japan, the goddess Izanami, is said to be buried on Mt. Hiba, at the border of the old provinces of Izumo and Hōki, near modern-day Yasugi of Shimane Prefecture.
By the Sengoku Period, Izumo had lost much of its importance. It was dominated before the Battle of Sekigahara by the Mori clan, and after Sekigahara, it was an independent fief with a castle town at modern Matsue.
- Shimane District (島根郡) - part of Yatsuka District (八束郡)
- Aika District (秋鹿郡) - part of Yatsuka District (八束郡)
- Ou District (意宇郡) - part of Yatsuka District (八束郡)
- Nogi District (能義郡)
- Nita District (仁多郡)
- Izumo District (出雲郡) - part of Hikawa District (簸川郡)
- Tatenui District (楯縫郡) - part of Hikawa District (簸川郡)
- Kando District (神門郡) - part of Hikawa District (簸川郡)
- Ohara District (大原郡)
- Iishi District (飯石郡)
- 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
Media related to Izumo Province at Wikimedia Commons
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