British Museum | Museum of Modern Art | Metropolitan Museum of Art | Johann Wolfgang von Goethe | American Museum of Natural History | Victoria and Albert Museum | Natural History Museum | San Francisco Museum of Modern Art | Otto von Bismarck | Honolulu Museum of Art | museum | Whitney Museum of American Art | Museum of Fine Arts, Boston | Los Angeles County Museum of Art | Solomon R. Guggenheim Museum | Der Spiegel | National Air and Space Museum | Brooklyn Museum | National Baseball Hall of Fame and Museum | Alexander von Humboldt | Hermitage Museum | National Museum of Racing and Hall of Fame | Der Rosenkavalier | Wernher von Braun | Museum of Contemporary Art | Field Museum of Natural History | Carl Maria von Weber | Der Ring des Nibelungen | Rotenburg an der Fulda | Philadelphia Museum of Art |
Another important monograph on his work was published by Kehrer in 2003, in conjunction with his museum exhibition, The Language of Man, at the Neues Museum Weserburg Bremen and Von der Heydt-Museum Wuppertal in 2004, with essays by Thomas Deecke, Peter Friese, Hans-Jürgen Heinrichs and Richard Milazzo.
Clemens Weiss has works in the collections of the Museum of Modern Art, Folkwang Museum (Essen), Hamburger Bahnhof (Berlin), New York Public Library (The Spencer Collection), Pushkin Museum (Moscow), Palace of Nations (Geneva), University of South Florida (Art Museum), Von der Heydt Museum (Wuppertal, Germany) and Wadsworth Atheneum, Hartford (USA).