| Acronym | Definition |
|---|
| NTTR➣North Texas Trail Runners |
| NTTR➣New Tools for Teaching and Research (Princeton University; Princeton, NJ) |
| NTTR➣Nevada Truck and Trailer Repair Co. (Las Vegas, NV) |
| NTTR➣Naval Torpedo Testing Range (US Navy) |
| NTTR➣Nevada Test & Training Range (Nellis AFB, NV, USA) |
| NTTR➣Nontactical Telecommunications Requirement |