Museum Jan (until January 2020 Museum Jan van der Togt) is a modern visual art museum in Amstelveen, near Amsterdam in the Netherlands. It was established by 1991 by , an industrialist who was also the founder of the company Tomado who was a collector of contemporary art. He wanted his collection to remain together and formed a foundation for this. Besides a permanent collection of paintings and sculptures, the museum has an important collection of modern glass art such as Libenský & Brychtová, Maria Lugosi and . They include masterpieces of avant-garde Czech glass artists such as and . Besides exhibitions from the permanent collection there are exhibitions several times a year, featuring notable artists in the modern visual art field such as Eugène Brands, Karel Appel, Ans Wortel, Anton Heyboer and Hugo Claus.