| Abbreviation | Definition |
|---|---|
| NMV | New Manx Vehicle |
| NMV | Non Motorized Vehicle |
| NMV | Non-Motorized Vehicle |
| NMVS | New Motor Vehicle Sales |
| NMVS | Non Motor Vehicles And Structures |
| NMVTIS | National Motor Vehicle Title Information System |
| NMVTIS | National Motor Vehicle Titling Information System |
| NMZ | No Motor Zone |
| NNEPRA | Northern New England Passenger Rail Authority |
| NNR | Nishi-Nippon Railroad |
| NNTA | New North Transportation Alliance |
| NNTR | Notified National Technical Rule |
| NOC | Next Oil Change |
| NOC | Next Origin Cancelled |
| NOC | Non Overhead Cam |
| NOC | Non-Overhead Cam |
| NOL | Northern Link |
| NOM | Noise and Operations Monitoring |
| NOPT | No Procedure Turn Required |
| NOPUS | National Occupant Protection Use Survey |