Nacht van de Wansmaak (Translation: "Night of Repulsion") is a Flemish-Dutch film festival dedicated to cult films, exploitation films and other bizarre B-films.
The festival is organized by Belgian film director Jan Verheyen (under the alias of "Max Rockatansky") and Dutch film director and journalist Jan Doense (under the alias of "Mr. Horror"). They provide the live introduction to each movie and film trailer shown at the festival. The event tours throughout the Netherlands and Flanders during all the important film theaters in Rotterdam, Utrecht, Groningen, Enschede, Amsterdam, Vlissingen, Ghent, Hasselt, Antwerp, Kortrijk, Biddinghuizen, Vlieland, Arnhem, Breda, Koersel-Beringen, Eindhoven, Leiden, Amersfoort, Nijmegen, Roeselare, Deventer, Zwolle and Brussels.
In 1986 Verheyen organized a "Nacht van de Rariteiten" ("Night of the Oddities") film festival in De Vooruit in Ghent. Despite having a low attendance of only 12 people the idea was reorganized into a full-blown film festival on 28 April 1990 in Rotterdam, which had more success. Under the new name "Nacht van de Wansmaak" the festival became a recurring event in 1997, 2001, 2003, 2004-2006 and again in 2014.