| Abbreviation | Definition |
|---|---|
| NDYX | Dresser Leasing Corporation (First Union Rail) |
| NDYX | First Union Rail |
| NE | Number of Engines |
| NEAX | Nemic Leasing Corporation |
| NECR | New England Central Railroad |
| NECR | New England Central Railroad Incorporated |
| NECX | Mid-Am Equipment |
| NECX | Mid-Am Equipment Incorporated |
| NEDT | North East Dundas Tramway |
| NEFX | Northeast Corridor Foundation |
| NEGS | New England Southern Railroad |
| NEGS | New England Southern Railroad Company |
| NEKM | Mid-Michigan Railroad Northeast Kansas and Missouri Division |
| NEKM | NorthEast Kansas and Missouri Division Mid- Michigan Railroad Incorporated |
| NELU | New England Express Lines |
| NELX | Dresser Leasing Corporation |
| NEMX | Ogden Martin Systems of Montgomery |
| NENE | Nebraska Northeastern Railway |
| NENE | Nebraska Northeastern Railway Company |
| NEPU | Neptune Orient Lines |