| Acronym | Meaning |
 | MW | Megawords |
 | MWG | Meteorological Working Group |
 | MWISP | Mt. Washington Winter Icing And Storms Project |
 | MWO | Mt. Washington Observatory |
 | MWP | MicroWave Profiler |
 | N-AWIPS | National Centers Advanced Weather Interactive Processing Systems |
 | N-AWIPS | National Centers Advanced Weather Interactive Processing Systems |
 | N-ROSS | Naval Remote Ocean Sensing System |
 | N-ROSS | Naval Research Oceanographic Satellite System |
 | N-SCAT | NASA Scatterometer |
 | N/A OR NA | Not Applicable |
 | NAC | NCAR Administrators Committee |
 | NACCAM | National Coordinating Committee On Aviation Meteorology |
 | NACOA | National Advisory Committee On Oceans And Atmosphere |
 | NADO | New Airport Development Office |
 | NAE | National Aeronautical Establishment |
 | NAE | National Academy Of Engineering |
 | NAFAX | Analog Facsimile Map |
 | NAFTA | North American Free Trade Agreement |
 | NAG | Numerical Algorithms Group Inc. |
 | NAIC | National Astronomy And Ionosphere Center |
 | NAILS | NCAR Airborne Infrared Lidar System |
 | NAO | North American Oscillation |
 | NAO | North Atlantic Oscillation |
 | NAO | North Atlantic Ocean |
 | NAOPS | North Atlantic Ocean Prediction Systems |
 | NAOS | North American Observing System |
 | NAPAP | National Acid Precipitation Assessment Program |
 | NAPP | National Aerial Photography Program |
 | NAR | Nonadvocacy Review |
 | NARA | U.S. National Archives And Records Administration |
 | NARE | North Atlantic Regional Experiment |
 | NAS | National Academy Of Sciences |
 | NAS | National Airspace System |
 | NAS | Naval Air Station |
 | NASA | National Aeronautics And Space Administration |
 | NASAO | National Association Of State Aeronautics And Organizations |
 | NASCAS | NAS Committee On Atmospheric Sciences |
 | NASCO | NAS Committee On Oceanography |
 | NASCOM | NASA Communications Network |
 | NASCOM II | Upgraded Version Of NASA Communications Network |
 | NASDA | National Space Development Agency |
 | NASN | National Air Surveillance Network |
 | NASN | NASN Cascade Impacter In Aerosol Studies |
 | NASW | National Association Of Science Writers |
 | NAT | Nitric Acid Trihydrate |
 | NATCA | National Air Traffic Control Administration |
 | NATO | North Atlantic Treaty Organization |
 | NATS | NCAR Aircraft (or Airborne) Telemetry System |
 | NAUG | NASCOM Augmentation |