Kunstmuseen Krefeld, Art museum complex in Krefeld, Germany.

Kunstmuseen Krefeld is an art museum network in Krefeld, Germany, made up of three separate buildings: the Kaiser Wilhelm Museum in the city center and two residential villas, Haus Lange and Haus Esters, in the Bockum neighborhood. Together they hold a collection of around 24,000 works covering a wide range of periods.

The Kaiser Wilhelm Museum was founded in 1897 and served as the starting point of what would grow into a larger network. Decades later, two private homes designed by Ludwig Mies van der Rohe were added to the group and converted for use as exhibition spaces.

The name of the main house recalls Kaiser Wilhelm I, for whom the building was erected as a memorial after his death in 1888 instead of a monument. The poster collection began in 1900 with 26 purchases made under the first director, Friedrich Deneken. In 1923 Johan Thorn Prikker created four murals titled Lebensalter on the upper floor; bricked up under the Nazi regime, they survived the war.

The Kaiser Wilhelm Museum is open year-round as the main venue, while Haus Lange and Haus Esters only open during temporary exhibitions. It is worth checking in advance which of the three buildings will be accessible on the day you plan to visit.

Haus Lange was lent to the city in 1955 by Ulrich Lange for ten years, and in 1969 he donated it on condition that contemporary art be shown there for 99 years. Under Paul Wember it hosted Yves Klein's first and last museum retrospective during his lifetime.