| NTCA | National Tax and Customs Administration 
| Others |
| NTCA | National Telecommunications Cooperative Association
| Others |
| NTCA | National Tenpin Coaches Association
| Others |
| NTCA | National Tenpins Coaches Association
| Others |
| NTCA | National Thermal Control Authority
| Others |
| NTCA | National Throws Coaches Association
| Others |
| NTCA | National Tiger Conservation Authority
| Others |
| NTCA | National Tile Contractors Association
| Others |
| NTCA | National Token Collectors Association
| Others |
| NTCA | National Transport Commission Act
| Others |
| NTCA | National Tuberculosis Controllers Association
| Others |
| NTCA | New Trends in Civil Aviation
| Others |
| NTCA | North Texas Christian Academy
| Others |
| NTCA | North Texas Collegiate Academy
| Others |
| NTCA | North Texas Colorguard Association
| Others |
| NTCA | North Texas Compensation Association
| Others |
| NTCA | North Texas Corvair Association
| Others |
| NTCA | North Texas Cricket Association
| Others |
| NTCA | Northern Triangle of Central America
| Others |
| NTCA | Norwich Terrier Club of America
| Others |