| Acronym | Definition |
|---|
| NTAC | NIEM (National Information Exchange Model) Technical Architecture Committee |
| NTAC | National Technical Assistance Center |
| NTAC | National Transgender Advocacy Coalition |
| NTAC | National Threat Assessment Center (United States Secret Service) |
| NTAC | National Technical Advisory Committee |
| NTAC | Never Trust a Cop |
| NTAC | Neighborhood Technical Assistance Center |
| NTAC | North Texas Airstream Community |
| NTAC | No Talent Ass Clown (from the movie: Office Space) |
| NTAC | New Town Alano Club (Chicago, IL) |
| NTAC | North Toronto Aquatic Club (Canada) |
| NTAC | Northeast Tactical Airsoft Club (UK) |
| NTAC | National Tax Assistance Corp. |
| NTAC | Natural Therapies Accreditation Commission (Las Vegas, NV) |
| NTAC | Northwest Territories Automobile Council |