B class
- A- and B-class destroyer
- B series (disambiguation)
- B type (disambiguation)
- B-class Melbourne tram
- B-class blimp
- B-class destroyer (1913)
- B-class lifeboat
- B-class submarine (disambiguation)
- B-segment
- Burak-class corvette
- CIÉ 101 Class
- CIÉ 113 Class
- Class B (disambiguation)
- DHR B Class
- LCDR B class
- MRWA B class
- Mercedes-Benz B-Class
- NBR B class
- NZR B class (1874)
- NZR B class (1899)
- Victorian Railways B class (1861)
- Victorian Railways B class (diesel)
- WAGR B class
- WAGR B class (diesel)
- WikiProject