| Acronym | Definition |
|---|
| NTAS➣National Terrorism Advisory System (US DHS) |
| NTAS➣New Tokyo Airport Service (Tokyo, Japan) |
| NTAS➣Northern Territory Archives Service (Australia) |
| NTAS➣Naruto: The Abridged Series |
| NTAS➣New Transfer Agency System (software) |
| NTAS➣National Telephone Answering Service (Cleveland, TN) |
| NTAS➣Navy Training Assessment System |
| NTAS➣Norwegian Tracking Adjunct System |
| NTAS➣NORAD TAC AUTOVON System |