| Acronym | Definition |
|---|
| NCA | National Command Authorities |
| NCA | National Communication Association |
| NCA | North Central Association of Colleges and Schools |
| NCA | Network Computing and Applications (IEEE International Symposium) |
| NCA | National Capital Area |
| NCA | National Children's Alliance |
| NCA | National Conservation Area (US Bureau of Land Management) |
| NCA | Norwegian Church Aid |
| NCA | National Credit Act |
| NCA | National Cemetery Administration |
| NCA | National Cosmetology Association |
| NCA | National Carousel Association |
| NCA | National Constitutional Assembly (Zimbabwe) |
| NCA | National Confectioners Association |
| NCA | National College of Arts (Pakistan) |
| NCA | National Coffee Association |
| NCA | Not Currently Available |
| NCA | National Club Association (Washington, DC) |
| NCA | National Candle Association |
| NCA | Network Computing Architecture |
| NCA | National Coastal Assessment (US EPA) |
| NCA | Network Communications Adapter |
| NCA | National Camp Association |
| NCA | National Cattlemen's Association |
| NCA | Northwest College of Art (Washington) |
| NCA | Non-Compete Agreement |
| NCA | National Council on Aging |
| NCA | National Craft Association |
| NCA | National Competition Authority (EU) |
| NCA | National Caving Association (UK) |
| NCA | Norwegian Competition Authority |
| NCA | National Cleaners Association |
| NCA | National Committee on Accreditation |
| NCA | North Caicos, Turks And Caicos Islands (Airport Code) |
| NCA | National Coal Association |
| NCA | National Costumers Association (Indianapolis, IN) |
| NCA | National Caves Association (Kentucky) |
| NCA | Neighborhood Cleaners Association |
| NCA | National Courier Association (UK) |
| NCA | National Certification Authority (various locations) |
| NCA | Netherlands Centre for Alternatives to animal use |
| NCA | National Council for Adoption |
| NCA | Noise Control Act of 1972 (US) |
| NCA | Nevada Cattlemen's Association |
| NCA | North Coast Aquatics (California) |
| NCA | National Canners Association |
| NCA | Neurocirculatory Asthenia |
| NCA | Network Control Analysis |
| NCA | National Constructors Association |
| NCA | Notice of Cash Allocation |
| NCA | Network Computer Architecture (Apollo) |
| NCA | National Cathedral Association |
| NCA | Non Current Asset |
| NCA | Nicaraguan Cultural Alliance |
| NCA | Nortel Certified Architect |
| NCA | National Chamber of Agriculture |
| NCA | Nashua Christian Academy |
| NCA | Nebraska Counseling Association |
| NCA | Nursing Care Assistant (UK) |
| NCA | Northwest Capital Appreciation, Inc |
| NCA | Normal Central Assistance (India) |
| NCA | National Coordinating Agency |
| NCA | National Communications Agency |
| NCA | Non Circumvention Agreement |
| NCA | Nuclear and Chemical Agency |
| NCA | National Council of Attractions |
| NCA | Number of Calls Abandoned (telephony) |
| NCA | Nebraska Cattlemen's Association |
| NCA | Navy Counselor Association, Inc. |
| NCA | Not Camp Appropriate |
| NCA | No Circuit Announcement |
| NCA | Navy Center for Cost Analysis |
| NCA | Nominee-Based Congestion Algorithm |
| NCA | Northern Communications Area |
| NCA | Narrow Coverage Area (DoD SATCOM) |
| NCA | Neil Cerbone Associates, Inc (South Orange, NJ) |
| NCA | New Charter Academy (UK) |
| NCA | Norwegian Concrete Association |
| NCA | National Contest Association |
| NCA | Nikon Color Adjustment |
| NCA | Node-Cooperation Algorithm |
| NCA | Marine Corps Air Station New River, Jacksonville, NC (airport identifier) |
| NCA | Network Control Agent |
| NCA | Nepal Cultural Association |
| NCA | Nurse Consultant Associates |
| NCA | National Cheerleaders Association |
| NCA | Nemzeti Civil Alapprogram (Hungarian: National Civil Fund Program) |
| NCA | News and Current Affairs |
| NCA | Northern Consultancy Association |
| NCA | National Consumer Agency (Ireland) |
| NCA | New Covenant Academy (Springfield, MO) |