The NS Mat '54 or Materieel '54 was an electric multiple unit train, used by the Dutch State-owned railways from 1956 until 1996. The typical nose of the train was designed for extra safety for the train driver. The public gave the train a nickname: Doghead (Hondekop). The trains were built by Allan of Rotterdam, Beijnes and Werkspoor. Equipped with a Scharfenberg coupler, they could run in series. Not only with the same model but also with older models, the , , and . Two of the trains were involved in the 1975 Dutch train hostage crisis and 1977 Dutch train hijacking.