The Dutch Harness Horse or Tuigpaard is a warmblood type of fine driving horse that has been developed in the Netherlands since the end of World War II. Their studbook is kept by the Koninklijk Warmbloed Paardenstamboek Nederland (Royal Warmblood Horse Studbook of the Netherlands) or KWPN. The breed is based on the native Groningen and Gelderland horses which were formerly indispensable in agriculture and transportation services.