Class 57 or 57 class may refer to:
British Rail Class 57 DRG Class 57, a German goods locomotive class with a 0-10-0 wheel arrangement operated by the Deutsche Reichsbahn and comprising the: Class 57.0: Saxon XI V Class 57.0II: BBÖ 180, PKP-Class Tw11 Class 57.1: Saxon XI H Class 57.1–5II: BBÖ 80, PKP-Class Tw12, JDŽ 28 Class 57.2: Saxon XI HV Class 57.3: Württemberg H Class 57.4: Württemberg Hh Class 57.5: Bavarian G 5/5 Class 57.6: BBÖ 480 Class 57.7: ČSD Class 524.2 Class 57.8: JDŽ 134 Class 57.9: PH I Class 57.10–35: Prussian G 10 New South Wales 57 class locomotive