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Ukan (有漢町, Ukan-chō?) was a town located in Jōbō District, Okayama, Japan. On October 1, 2004, Ukan merged into the city of Takahashi.
As of 2003, the town had an estimated population of 2,621 and a density of 56.14 persons per km². The total area was 46.69 km².