The art museum collection comprises around 1500 works from the areas of painting, sculpture and object art, over 10,000 works on paper, and about 850 photographs, including significant contributions to the development of artistic photography (A. Rodtschenko, Man Ray, H. Bayer).
The earliest works among the museum's holdings are from the first half of the 19th century (C. D. Friedrich, J. B. Reiter). From the area of classical modernism the Lentos collection includes important paintings by Klimt, Schiele, Kokoschka, Corinth and Pechstein. The collection also covers the inter-war period with works from German and Austrian Expressionism and Neue Sachlichkeit (New Objectivity). The period after 1945 is exemplified with outstanding works and ensembles of international art, including paintings, sculptures and graphic works by Appel, Bayer, Nay, Warhol, Haring, Staudacher, Lassnig, Lüpertz, Rainer, Chillida, Cragg, Scheibl, Scully, Balkenhol, Caro, Goeschl, Export, Krystufek and many others.
The holdings are continuously expanded through active acquisition policies.