The Leopold Museum is a modern art museum located in the Museum Quarter of Vienna, Austria. The museum houses the largest collection of Austrian art in the world, including works by Gustav Klimt, Egon Schiele, and Oskar Kokoschka.

The museum was founded by Rudolf Leopold, a physician and art collector who donated his collection of Austrian art to the Austrian state in 1994. The collection includes more than 5,000 works of art, including paintings, drawings, prints, and sculptures.

The museum's permanent exhibition features a range of works from the late 19th century to the present day. The collection is organized thematically, with rooms dedicated to different artists and artistic movements. Highlights of the collection include Klimt's iconic painting "Death and Life," Schiele's self-portraits and nudes, and works by the Viennese Secessionist movement.

In addition to its permanent collection, the museum hosts temporary exhibitions and events throughout the year. The Leopold Museum is also home to a research center dedicated to the study of Austrian art and culture.