| Acronym | Definition |
|---|
| NCAA | National Collegiate Athletic Association (Indianapolis, IN, USA) |
| NCAA | Nigerian Civil Aviation Authority |
| NCAA | National Clinical Assessment Authority (UK) |
| NCAA | No Clothes at All |
| NCAA | National Council of Arab Americans |
| NCAA | National Civil Aviation Authority |
| NCAA | New College Alumni Association |
| NCAA | NATO (North Atlantic Treaty Organization) Civil Airlift Agency (US DoD) |
| NCAA | Non-Nuclear Consumables Annual Analysis |
| NCAA | NATO Civil Aviation Agency |
| NCAA | NATO Civil Air Augmentation |
| NCAA | National Command Authority Aircraft |
| NCAA | National Council for Accreditation and Attestation (Republic of Moldova) |