| Abbreviation | Definition |
|---|---|
| NARS | National Agricultural Research System |
| NARS | National Agriculture Research System |
| NATURE | National Association for Trade Union Research and Education |
| NATURE | Nurturing American Tribal Undergraduate Research and Education |
| NBER | National Budget for Economic Research |
| NBRC | National Brain Research Center |
| NBRC | National Brain Research Centre |
| NBRC | National Breastfeeding Research Consortium |
| NBRC | National Brick Research Center |
| NBRC | Northwest Behavioral Research Center |
| NBRF | Neutral Buoyancy Research Facility |
| NBRP | Nisei Baseball Research Project |
| NCAER | National Council of Applied and Economic Research |
| NCAER | National Council of Applied Economic Research |
| NCAER | National Council of Applied Economics Research |
| NCAR | National Center for Atmospheric Research's |
| NCAR | Nevada Center for Applied Research |
| NCAS | National Centre for Atmospheric Science |
| NCBR | National Centre for Biomolecular Research |
| NCBR | Nijmegen Centre for Border Research |