ATCA is the abbreviation for:

  • Advanced Telecommunications Computing Architecture, the industry standard for telecommunications hardware
  • Airline Training Center Arizona, flight school Lufthansa Flight Training GmbH in the United States of America
  • Air Traffic Control Association
  • Alien Tort Claims Act, Act for the regulation of foreign claims in the United States of America
  • Australia Telescope Compact Array, net of astronomy radio telescopes in Australia

See also:

  • Disambiguation
  • Abbreviation