| Abbreviation | Definition |
|---|---|
| BOB | Bomb On Board |
| BOB | Born On Board |
| BOC | Back Of Cab |
| BOI | Boise Air Terminal / Gowen Field |
| BOL | Bill Of Lading |
| BOLT | Battery Operated Land Transportation |
| BOLT | Battery Operated Local Transit |
| BON | Boston North Station |
| BONBOS | Boston North and South Amtrak Stations |
| BOP | Blow Out Prevention |
| BOP | Border Pacific Railroad |
| BOS | Boston (Logan) Airport |
| BOS | Boston South Station |
| BOS | General Edward Lawrence Logan International Airport |
| BOST | Bulk Oil Storage Transportation |
| BOTS | Bureau of Transportation Statistics |
| BOV | Bug Out Vehicle |
| BOVC | Banbridge Old Vehicle Club |
| BOW | Basic Operating Weight |
| BP | Balanced Pistons |