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Kosan may be:

  • Kosan County, a county in Kangwon Province, North Korea
  • Kosan Biosciences, American pharmaceuticals company
  • Ube Kosan Open, golf tournament played at the Ube 72 Country Club, Yamaguchi, Japan
  • Kosan GmbH, information security and network monitoring consultancy, Europe

People with the surname Kosan include:

See also[edit]

  • Ko San, South Korean cosmonaut