Kōshū or Koshu may refer to:
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Kōshū, another name for Kai Province.
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Kōshū, Yamanashi
is a Cities of Japan, city located in Yamanashi Prefecture, Japan. , the city had an estimated population of 29,659 in 13,141 households, and a population density of 120 persons per km². The total area of the city is . The city is the home of th ...
, the present city in Yamanashi Prefecture.
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Koshu (grape), a variety of Grape. /
甲州 (葡萄)
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Kōshū, another name for Hyūga Province.
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''Kōshū'' (survey ship), a ship of the Imperial Japanese Navy
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