# NCA

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 Camara 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
* News Channel America, an American television news and entertainment network
* Necessary Condition Analysis, a data analysis method