| Palais Clam-Gallas | |
| Alternate Names: | Gartenpalais Clam-Gallas |
| Building Type: | Summer palace |
| Architectural Style: | Neoclassical, Biedermeier |
| Client: | Franz Joseph, Prince of Dietrichstein |
| Current Tenants: | Institut français de Vienne |
| Address: | Währinger Strasse 30, 1090 Wien |
| Location Town: | Vienna |
| Location Country: | Austria |
| Coordinates: | 48.2201°N 16.3577°W |
| Completion Date: | c. 1835 |
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 architect was . The building is in Neo-classical style typical of the Biedermeier period. In 1850, the palace passed by marriage into the family.
It was used by American troops following the Second World War. In 1952, the Clam-Gallas family sold it to the Republic of France. In 1954, the Lycée Français de Vienne was built on a part of the grounds. From 1980, it was the home of the Institut français de Vienne, the French institute in Vienna.