Pan-Netherlands
Pan-Netherlands (Dutch: Heel-Nederland), sometimes translated as Whole-Netherlands, is an irredentist concept which aims to unite the Low Countries (Netherlands, Belgium, and Luxembourg) into a single state. It is an example of Pan-Nationalism.
Some variants do not include Luxembourg. In less common variants, the French Netherlands (Nord-Pas-de-Calais) are also involved in the merger as well as some border territories in Germany (e.g. East Friesland). Some Pan-Netherlandic groups also want to include South Africa due to the relation of the Dutch to the Afrikaners and the Afrikaans language.
The goal is to unite these territories into one multilingual state (unitary, federal or confederal). This differs from Greater Netherlandism which aims to unite all Dutch-speaking areas. The name of this state differs per organization, some commonly used names are the (united/reunited) Netherlands/Low Countries and mainly before 1945 the name Dietsland was also used.