| Acronym | Definition |
|---|
| NTCA | National Telecommunications Cooperative Association |
| NTCA | National Tiger Conservation Authority (India) |
| NTCA | National Tile Contractors Association |
| NTCA | National Telephone Cooperative Association |
| NTCA | National Token Collectors Association |
| NTCA | National TB Controllers Association |
| NTCA | North Texas Colorguard Association (Arlington, Texas) |
| NTCA | Northern Territory Cattlemen's Association |
| NTCA | Null-Terminated Character Array (programming) |
| NTCA | National Teen Courts of America |
| NTCA | North Texas Corvair Association |
| NTCA | Northern Tasmania Cricket Association |
| NTCA | National Tribal Chairmen's Association (Native American coalition) |
| NTCA | National Television Cable Association |
| NTCA | Not Type Classified for Army Use |