| Abbreviation | Definition |
|---|---|
| NBSAC | National Boating Safety Advisory Council |
| NBST | Non Bus Student Transportation |
| NBSTC | North Bengal State Transport Corporation |
| NBTA | National Bus Traffic Association |
| NBTC | North Bethesda Transportation Center |
| NC | Navigation Code |
| NC | Not a Car |
| NC | Not Clear |
| NCAA | National Command Authority Aircraft - 747 |
| NCAH | Non-Controlled Access Highway |
| NCAP | New Car Assessment Program |
| NCAT | National Coalition for Advanced Transportation |
| NCB | National Cargo Bureau |
| NCBN | National Clean Bus Network |
| NCC | Navigation Command Center |
| NCC | Navigation Control Centre |
| NCC | Net Cargo Capacity |
| NCDC | National Climatic Data Center |
| NCDMV | North Carolina Department of Motor Vehicles |
| NCDMV | North Carolina Division of Motor Vehicles |