The Palais Clam-Gallas is a palace in Neo-classical or Biedermeier style in Vienna, Austria.

It was built in 1834 or 1835 as a summer residence by Franz Joseph, Prince of Dietrichstein.

The Palais Clam-Gallas was built as a summer residence in a park, laid out as an English garden, which had belonged to the Dietrichstein family since 1690.

The building is in Neo-classical style typical of the Biedermeier period.

[1] In 1954, the Lycée Français de Vienne was built on a part of the grounds.