| Acronym | Definition |
|---|
| NRL | National Rugby League (National Rugby League competition from Australia) |
| NRL | Naval Research Laboratory |
| NRL | Natural Rubber Latex |
| NRL | National Ringette League (Canada) |
| NRL | not Release |
| NRL | Navigation Reverb Lockout |
| NRL | Naked Rugby League (calendar) |
| NRL | National Right to Life |
| NRL | Nanoscale Research Letters (Springer) |
| NRL | National Radiation Laboratory (New Zealand) |
| NRL | Numaligarh Refinery Limited (India) |
| NRL | National Refinery Limited (Pakistan) |
| NRL | Non-Resident Landlord (real estate; UK) |
| NRL | Noise Reduction Level |
| NRL | National Research Lab (Seoul, Korea) |
| NRL | Neural Retina Leucine Zipper |
| NRL | Network Research Lab (University of North Texas Department of Computer Science) |
| NRL | Norsk Rally Lydighet (Norwegian: Norwegian Obedience Rally; dogs) |
| NRL | Northrock Resources Ltd. (Canada) |
| NRL | Nationales Referenzlabor (National Reference Laboratory, Friedrich-Loeffler-Institut, Greifswald, Germany) |
| NRL | National Resource Library |
| NRL | National Rowing League (UK; established in 1998 to encourage competition between UK rowing clubs) |
| NRL | National Reconciliation Law (Guatemala) |
| NRL | Negawatt Resources Limited (New Zealand) |
| NRL | Nippon Rediffusion Limited (Japan) |
| NRL | Not Really Laughing |
| NRL | NUWEP (Nuclear Weapons Employment Policy) Reconnaissance List (US DoD) |
| NRL | National Reconnaissance List |
| NRL | Nonrated Line |
