Class 18

Class 18 may refer to:

The DRG Class 18 were German steam locomotives operated by the Deutsche Reichsbahn between the wars. These express tender locomotives had been taken over from the state railways and had a 4-6-2 (Pacific) wheel arrangement.
 * A18-class container ship
 * Belgian Railways Class 18 (Alsthom)
 * Belgian Railways Class 18 (Siemens)
 * British Rail Class 18
 * Fenniarail Class Dr18
 * GER Class T18
 * NSB Class 18


 * Class 18.0: Saxon XVIII H
 * Class 18.1: Württemberg C
 * Class 18.2: Baden IV f
 * Class 18.3: Baden IV h
 * Class 18.4-5: Bavarian S 3/6
 * Class 18.6: PKP Class Pm36
 * Class T 18.10: turbine locomotives