Class 19 may refer to:

Caledonian Railway 19 Class, 0-4-4T steam locomotives Belgian Railways Class 19, electric locomotives British Rail Class 19, an experimental locomotive DRG Class 19, 2-8-2 express train, tender locomotives of the Deutsche Reichsbahn: DRG Class 19.0: Saxon XX HV DRB Class 19.1: PKP class Pt31 DRB Class 19.10 GER Class T19 KTM Class 19, diesel-electric shunting locomotives New South Wales Z19 class locomotive, 0-6-0 steam locomotives O 19-class submarine

See also

No.19 class minesweeper