| Abbreviation | Definition |
|---|---|
| BMZ | Boston and Maine Corporation |
| BMZ | Boston and Maine Railroad (Pan Am Railways) |
| BN | Burlington Northern and Santa Fe Railway Company |
| BN | Burlington Northern Railroad (BNSF Railway) |
| BNAU | Burlington Northern and Santa Fe Railway Company |
| BNAU | Burlington Northern Railroad (BNSF Railway) |
| BNAZ | Burlington Northern and Santa Fe Railway Company |
| BNAZ | Burlington Northern Railroad (BNSF Railway) |
| BNFE | Burlington Northern and Santa Fe Railway Company |
| BNFE | Burlington Northern Railroad (BNSF Railway) |
| BNFT | Burlington Northern Railroad (BNSF Railway) |
| BNGR | Blackwell Northern Gateway Railroad |
| BNGU | Superior International Imports |
| BNIU | British and Irish Steam Packet |
| BNIU | British and Irish Steam Packet Company |
| BNML | Burlington Northern ( Manitoba) Limited |
| BNML | Burlington Northern (Manitoba) |
| BNO | Burlington Northern Railroad (BNSF Railway) |
| BNOW | Burlington Northern (Oregon-Washington) |
| BNPR | Brantford, Norfolk, & Port Burwell Railway |