| Abbreviation | Definition |
|---|---|
| NSRRTD | Nijam State Rail Road Transport Department |
| NSRV | Near Space Return Vehicle |
| NSSTA | National Small Series Type Approval |
| NSTA | Nebraska School Transportation Association |
| NSTS | National Strategy for Transportation Security |
| NT | No Takeoff |
| NT | No Turbo |
| NTA | Nevada Transportation Authority |
| NTA | No Torque At |
| NTACS | Nationwide Truck Activity Survey |
| NTAI | Northern Transportation Adaptation Initiative |
| NTAP | Notices To Airmen Publication |
| NTARS | National Transportation Analysis Regions |
| NTC | National Transport Commission (Australia) |
| NTC | National Transportation Center |
| NTC | Nebraska Transportation Center |
| NTCS | National Transportation Consortium Of States |
| NTD | National Transit Database |
| NTDB | National Transit DataBase |
| NTDC | National Transportation Data Center |