Olaf-Gulbransson-Museum Tegernsee, Modernist art museum in Tegernsee, Germany.

The Olaf-Gulbransson-Museum is a branch gallery of the Bavarian State Painting Collections, housed in a pavilion with an originally open atrium that architect Sep Ruf designed and that opened in 1966. An underground exhibition room was added in 1993, and in 2007/2008 a largely subterranean extension with a new entrance, ticket desk and shop was built in the Kurgarten. The Ruf building was then restored as a listed monument and upgraded for contemporary exhibitions.

A support association was founded in Tegernsee in 1962 on the initiative of the artist's widow, Dagny Björnsson-Gulbransson, with Theodor Heuss and Ludwig Erhard as patrons. The museum opened in the Kurgarten on 31 May 1966. In 1973 the building and a large part of the exhibits passed to the Free State of Bavaria as the Olaf Gulbransson Foundation, making it a branch gallery of the Bavarian State Painting Collections.

The museum is named after Olaf Gulbransson, the Norwegian caricaturist who worked for the satirical magazine Simplicissimus. A permanent documentation traces the magazine's history with a focus on his contributions. Since 2023 the permanent exhibition also addresses his opportunism during the Nazi era, as the Süddeutsche Zeitung noted, without glossing over or concealing it.

The museum stands at Kurgarten 5 in the Kurgarten of Tegernsee. Since 2007/2008 the entrance, ticket desk and shop have been in a largely underground new building beside the park, connected to Sep Ruf's 1966 pavilion, which was renovated to meet current exhibition standards. The 1993 underground exhibition room adds further space.

The museum holds a third of the lithographic work of Honoré Daumier, made available through the Walter-Kames-Stiftung founded on 31 August 2007. The lithographs are shown in changing exhibitions in the Graphikkabinett. The 2023 redesign of the permanent display also addresses Gulbransson's opportunism during the Nazi era.