| National Center for Academic Transformation | Academic & Science |
| National Center for Accessible Transportation | Academic & Science |
| National Center for Advanced Technologies | Academic & Science |
| National Center for Asphalt Technology | Academic & Science |
| North Carolina Agricultural & Technology | Academic & Science |
| Newell Center for Arts Technology | Computing |
| National Center of Arts and Technology | Computing |
| National Center for Arts Technology | Computing |
| Noise Cancellation and Amplification Technology | Computing |
| Network Config Audit Tool | Computing |
| National Center for Arts and Technology | Computing |
| Non Contact Af Tester | Contact |
| NCAT Token | Cryptocurrency |
| National Creativity Aptitude Test | General |
| NSW Civil and Administrative Tribunal | General |
| Nihilism Chaos Anarchy Turmoil | General |
| North Central Area Transit | General |
| NSW Civil Administrative Tribunal | General |
| Network Capacity Assessment Tool | General |
| North Carolina Agricultural Technical | General |
| North Carolina A T | General |
| National Centre for Automotive Testing | General |
| National Center for Appropriate Technology | General |
| North Carolina Agricultural and Technical | General |
| National Center For Aviation Training | General |
| National Coalition for Advanced Transportation | Governmental |
| National Cancer Action Team | Medical |
| Northwest Center for Academics and Therapy | Medical |
| NormoCephalic ATraumatic | Medical |
| National Clinical Advisory Team | Medical |
| neurocognitive assessment tool | Medical |
| Atiu Island, Cook Islands | Regional |
