Class 25 may refer to:
AB-25-class patrol craft Belgian Railways Class 25, electric locomotive Belgian Railways Class 25.5 British Rail Class 25, diesel-electric locomotive EAR 25 class, steam locomotive L&YR Class 25, 0-6-0 steam locomotive DRG Class 25 (disambiguation) DRG Class ET 25, German electric multiples built for the Deutsche Reichsbahn in the 1930s. East German express locomotives operated by the DR after World War II: DR Class 25.0, a Neubaulokomotive DR Class 25.10, a trials locomotive New South Wales Z25 class locomotive, steam locomotive PKP class SM25, diesel shunter South African Railways Class 25 and Class 25NC 4-8-4 steam locomotives. V25-class torpedo boat