Class 9
- BR Standard Class 9F
- BR Standard Class 9F 92020-9
- British Rail Class 09
- Eurotunnel Class 9
- GCR Class 9A
- GCR Class 9D
- GCR Class 9F
- GCR Class 9J
- GCR Class 9K
- GCR Class 9N
- GCR Class 9P
- GCR Class 9Q
- GNR Class J9
- HAZMAT Class 9 Miscellaneous
- I-9-class submarine
- Indian locomotive class WAG-9
- LSWR F9 class
- LSWR T9 class
- MGWR Class 9
- NSB El 9
- O 9-class submarine
- PGM-9-class motor gunboat
- Prussian T 9
- Southern Pacific class AC-9