| Abbreviation | Definition |
|---|---|
| NMEA | National Marine Electronic Association |
| NMEA | National Marine Electronics Association |
| NMHR | New Mexico Health Resources |
| NMLA | New Mexico Library Association |
| NMPA | National Motorsports Press Association |
| NMPA | National Music Publishers Association |
| NMPA | New Mexico Press Association |
| NMPF | National Milk Producers Federation |
| NMSA | National Middle School Association |
| NNA | National Notary Association |
| NNC | IEEE Neural Networks Council |
| NNFA | National Nutritional Foods Association |
| NNN | Nevada Nursing Network |
| NNS | IEEE Neural Network Society |
| NOA | National Onion Association |
| NODA | National Operatic And Dramatic Association |
| NODA | National Orientation Directors Association |
| NODA | Nnational Operatic And Dramatic Association |
| NOFMA | National Oak Flooring Manufacturers Association |
| NOFTA | The North of Fifty-Thirty Association |