Class 57 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 57.0^II: BBÖ 180, PKP-Class Tw11
  • Class 57.1: Saxon XI H
  • Class 57.1–5^II: 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