| Abbreviation | Definition |
|---|---|
| NMT | Networked Media Tank |
| NMTP | Non Martensitic Transformation Products |
| NMW | Non-Metal Weatherstrip |
| NNP | Northwest Natural Products |
| NNPB | Narrow Neck Press and Blow |
| NNPW | New Never Played With |
| NOMKI | Nitric Oxide Meter Mark I |
| NOMKII | Nitric Oxide Meter Mark II |
| NOMP | NZB-O-Matic Plus |
| NOMS | Noise and Operations Monitoring System |
| NOOB | New Out Of Box |
| NORM | Nack Oriented Reliable Multicast |
| NOS | Not Often Satisfactory |
| NOS | Not On Shelf |
| NOS | Now On Sale |
| NOZ | Nozzle |
| NP | Nickel-Plated |
| NP | No Paint |
| NPAP | New Product Approval Process |
| NPBY | Needlepunch Polyester quilt Batting, yard roll |