Fritz Walther Meißner (anglicized: Meissner) (16 December 1882 – 16 November 1974) was a German technical physicist.

From 1922 to 1925, he established the world's third largest helium-liquifier, and discovered in 1933 the Meissner effect,[2] damping of the magnetic field in superconductors.

After World War II, he became the president of the Bavarian Academy of Sciences and Humanities.

In 1946, he was appointed director of the academy's first low temperature research commission.

Laboratories were located in Herrsching am Ammersee until 1965, when they were moved to Garching.