The Class DE15 (DE15形) is a five-axle C-B wheel arrangement diesel-hydraulic locomotive type operated in Japan as a self-propelled snowplough unit since 1967 by the national railway company Japanese National Railways (JNR), and later by Hokkaido Railway Company (JR Hokkaido), East Japan Railway Company (JR East), and West Japan Railway Company (JR West). A total of 85 locomotives were built between 1967 and 1981, and as of 1 April 2016, 25 locomotives remain in service.