| Acronym | Definition |
|---|
| NTRL➣National Technical Reports Library (US DOC) |
| NTRL➣Northern Territory Rugby League (est. 1950; Australia) |
| NTRL➣National Training Resources Limited (UK) |
| NTRL➣Non-Tenure Research Line (Stanford University) |
| NTRL➣North Texas Regional Laboratory (consumer regulations; Fort Worth, TX) |
| NTRL➣Navy Training Research Laboratory (US Navy) |