NCA may refer to:

Businesses and organisations

Australia

  • National Capital Authority, a government authority for development planning of the Capital Territory
  • National Crime Authority, defunct investigative agency

European Union

  • National Competent Authorities, referring to the country-level agencies participating in EU policy frameworks such as European Union competition law or European Banking Supervision

India

  • Nuclear Command Authority (India)
  • National Cricket Academy

Ireland

  • National Consumer Agency, a defunct government body
  • National Cycling Association, a defunct sports governing body

Norway

  • Norwegian Church Aid, a charity
  • Norwegian Coastal Administration, a government agency

Pakistan

  • National College of Arts, Lahore
  • National Command Authority (Pakistan)

United Kingdom

  • National Campaign for the Arts, a lobbying group
  • National Character Area, a type of region in England
  • National Crime Agency, a law enforcement agency
  • The Northern Care Alliance NHS Group, a health-care organisation for Greater Manchester

United States

  • National Climate Assessment, a governmental interagency
  • National Cheerleaders Association, an organization that holds cheer camps and competitions
  • National Credentialing Agency for Laboratory Personnel, a professional association for medical laboratory professionals.
  • National Coffee Association, a coffee industry body
  • National Command Authority (United States), a military doctrine
  • National Communication Association, an organization to promote communication studies as a discipline
  • National Conservation Area, a class of region managed by the Bureau of Land Management
  • North Central Association of Colleges and Schools, one of six organizations that provide higher learning accreditation

Elsewhere

  • National Citizens Alliance, federal political party in Canada
  • National Computerization Agency, a Korean statutory agency for informatization
  • Network of Concerned Anthropologists, an independent ad hoc network of anthropologists seeking to promote an ethical anthropology
  • National Conscription Agency, an agency in Taiwan
  • New Classical Adventure, a record label for classical music based in Hamburg, Germany
  • Nigerian College of Accountancy, training institution in Jos, Nigeria
  • Nippon Cargo Airlines, a cargo airline of Japan
  • Nuevo Central Argentino, an Argentine railway company

Chemistry

  • Amino acid N-carboxyanhydride
  • Lithium nickel cobalt aluminium oxides, a group of lithium-ion battery cathode materials

Computing

  • Network Computing Architecture (disambiguation)
  • Neighbourhood components analysis, a supervised classification technique
  • Nexus Computing Agents, trusted software programs in Microsoft's delayed Next-Generation Secure Computing Base initiative
  • Nortel Certified Architect, the highest Nortel certifications
  • .nca-File ( Nintendo Switch Content Archive- or Nikon Camera Color Adjustment-File)

Law

  • Nature Conservation Act 1992, Queensland, Australia
  • Noise Control Act, a U.S. law more formally known as the Noise Pollution and Abatement Act of 1972
  • Non-compete agreement, an agreement between an employer and employee prohibiting an employee from working for a competitor after separation

Places

  • New Caledonia, French overseas territory, UNDP country code
  • Nicaragua, by IOC country code
  • Urban community of Nice Côte d'Azur, the intercommunal structure gathering the city of Nice, France and some of its suburbs
  • Ngorongoro Conservation Area, a protected area and World Heritage Site Arusha, Tanzania
  • North Caicos Airport, Turks and Caicos Islands (by IATA code)

Other uses

  • Nationwide Ceasefire Agreement, a landmark ceasefire agreement in Myanmar commonly known by its abbreviation
  • NC.A (born 1996), Korean singer
  • Necessary Condition Analysis, a data analysis method