| Abbreviation | Definition |
|---|---|
| NTDR | National Transit Database Report |
| NTE | North Tarrant Express |
| NTEC | Nottingham Transportation Engineering Centre |
| NTEV | Near Term Electric Vehicle |
| NTFR | Net Freight |
| NTFS | Northern Territory Freight Services |
| NTG | Nolan Transportation Group |
| NTGIS | National Transit Geographic Information System |
| NTIS | National Transportation Insurance Solutions |
| NTL | National Transit Library |
| NTL | National Transportation Library |
| NTL | National Transportation Library's |
| NTL | Newfoundland Transshipment Limited |
| NTLC | National Traffic Law Center |
| NTMC | National Transportation Management Conference |
| NTO | New Turing Omnibus |
| NTOC | National Transportation Operations Coalition |
| NTP | Department of Energy National Transportation Program |
| NTP | National Transportation Policy |
| NTP | National Transportation Program |