| Word | Description |
| NAAE | National Association of Agricultural Educators |
| NABT | National Association of Biology Teachers |
| NACCP | National Association of Child Care Professionals |
| NACTA | National Association of Colleges and Teachers of Agriculture |
| NAEP | National Assessment of Educational Progress |
| NAESP | National Association of Elementary School Principals |
| NAGB | National Assessment of Governing Board |
| NAGC | National Association for Gifted Children |
| NAIS | National Association of Independent Schools |
| NAITTE | National Association of Industrial & Technical Teacher Educators |
| NAPT | National Association for Pupil Transportation |
| NASAE | National Association Supervisors of Agricultural Education |
| NASBE | National Association of State Boards of Education |
| NASC | The Northwest Association of Schools and Colleges |
| NASDPTS | National Association of State Directors of Pupil Transportation Services |
| NASDSE | National Association of State Directors of Special Education |
| NASDTEC | National Association of State Directors of Teacher Education and Certification |
| NASDVTEC | National Association of State Directors of Vocational Technical Education Consortium |
| NASSP | National Association of Secondary School Principals |
| NATEF | National Automotive Technicians Education Foundation |
| NBEA | National Business Education Association |
| NCATE | National Council for Accreditation of Teacher Education |
| NCCA | National Child Care Association |
| NCCER | National Center for Construction Education and Research |
| NCE | Normal Curve Equivalent |
| NCES | National Center for Education Statistics |
| NCHSE | National Consortium for Health Science Education |
| NCHSTE | National Consortium on Health Science and Technology Education |
| NCLB | No Child Left Behind Act of 2001 |
| NCSEE | National Coalition for Sex Equity in Education |
| NCTM | National Council of Teachers of Mathematics |
| NEA | National Education Association |
| NETC | Northwest Educational Technology Consortium |
| NHSA | National Head Start Association |
| NHTSA | National Highway Traffic Safety Administration |
| NIASE | National Institute for Automotive Service Excellence |
| NICHD | National Institute of Child Health and Human Development |
| NIH | National Institutes of Health |
| NILE | Northern International Livestock Exposition (held in Billings in October) |
| NIMS | The National Institute for Metalworking Skills |
| NKBA | National Kitchen & Bath Association |
| NLCSO | National Leadership Conference for State Officers (conducted in Wyoming for MT, WY and ND by national officers) |
| NPO | Nonprofit Organizations |
| NPRM | Notice of Proposed Rulemaking |
| NRL | National Robotics League |
| NRT | Norm-Reference Test |
| NSBA | National School Boards Association |
| NSELA | National Science Education Leadership Association |
| NSF | National Science Foundation |
| NSSP | National Science Scholars Program |
| NSTA | National Science Teachers Association |
| NSTEP | National Science & Technology Education Partnership |
| NWRCC | Northwest Regional Comprehensive Center |
| NWREL | Northwest Regional Educational Lab |
| NYSCHP | National Youth Science Camp Honors Program |