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Cos, COS, CoS, or Cos. may refer to:

Mathematics, science and technology[edit]



  • Chief of Staff, the coordinator of the supporting staff of an organization
  • Chief of Station, an official appointed as chief of a stationary post
  • Chief of Station, also known as resident spy, the chief spy operating in a foreign nation
  • Roman consul, the highest elected political office of the Roman Republic and the Empire

Organizations, societies and churches[edit]


See also[edit]