Nay’s works are represented nationally and internationally in numerous museums. The first purchases made early on the Provincial Museum Hanover (1927, CR 14), the Museum Behnhaus Lübeck (1928, CR 57) and the National Gallery Berlin (1931, CR 81). From 1945 on, many of Nay’s works were acquired by German museums, but also by prestigious museums in Europe and the United States. Most recently in 2019 the Staatsgalerie in Stuttgart acquired the painting “Yellow – Black – Red”, 1967 (CR 1237).

Suermondt-Ludwig-Museum, Aachen

Stedelijk Museum, Amsterdam, Netherlands

Museum Liner, Appenzell, Switzerland

Kunstmuseum Basel, Switzerland

Nationalgalerie Berlin

Kunsthalle Bielefeld

Indiana University Art Museum, Bloomington, IN, USA

Museum Bochum

Kunstmuseum Bonn

Rheinisches Landesmuseum, Bonn

Kunsthalle Bremen

Musées royaux des Beaux-Arts de Belgique, Brüssel, Belgien

Albright-Knox-Gallery, Buffalo, NY, USA

Busch-Reisinger Museum, Cambridge, MA, USA

Hessisches Landesmuseum, Darmstadt

The Detroit Institute of Arts, Detroit, MI, USA

Museum am Ostwall, Dortmund

Staatliche Kunstsammlungen Dresden

Leopold-Hoesch-Museum, Düren

Kunstsammlung Nordrhein-Westfalen, Dusseldorf

Museum Kunstpalast, Dusseldorf

Wilhelm Lehmbruck-Museum, Duisburg

Folkwang Museum, Essen

Städelsches Kunstinstitut, Frankfurt a. M.

Städtisches Museum Gelsenkirchen

Karl Ernst Osthaus Museum, Hagen

Staatliche Galerie Moritzburg, Halle

Kunsthalle Hamburg

Sprengel Museum, Hannover

Wadsworth Atheneum, Hartford, CT, USA