CO

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CO, Co, co, .co, c/o may refer to:

Computing and technology[edit]

  • .co, the Internet top-level domain for Colombia
  • .co (second-level domain), Internet second-level domain used to denote commercial organizations in many countries
  • Changeover switch, a type of electrical switch with both types of opened/closed contacts
  • Commitment ordering or Commit ordering, a concurrency control (serializability) technique for databases and transactional systems

Science and medicine[edit]

Geographic codes[edit]

Transport[edit]

People and official titles[edit]

Other uses[edit]

See also[edit]