Class 15 may refer to:
A15-class container ship Belgian Railways Class 15 British Rail Class 15 DR Class V 15 DRG Class 15, which was used twice by the Deutsche Reichsbahn in its classification of steam locomotives: In 1925 for the Bavarian S 2/6 express locomotive In 1938 following the Anschluss of Austria for the Austrian Class 10 of the Federal Railway of Austria (BBÖ) GER Class G15 GER Class M15 I-15-class submarine JNR Class DD15 JNR Class DE15 JNR Class ED15 LSWR D15 class LSWR H15 class LSWR N15 class LSWR S15 class M15-class monitor NSB El 15 PKP class SM15 Rhodesia Railways 15th class South African Class 15F 4-8-2 South African Class NG15 2-8-2 SR N15X class
See also Type 15 (disambiguation)