Toprak-Kala, in modern Karakalpakstan, Uzbekistan, was an ancient palace city and the capital of in Chorasmia in the 2nd/3rd century CE, where wall paintings, coins and archives were discovered.

[1] Toprak-Kala appears to have been built by Artav (Artabanos), ruler of Khwarezm, in the 1st or 2nd century CE.

[4] This abundant sculptural work may also have been accomplished by artisans from nearby Bactria, where a Hellenistic tradition remained active since the time of the Greco-Bactrian kingdom.

It has also been the subject of a modern renovation program, with the objective of showing what a fortress looked like originally.

Toprak-Kala is somewhat related to another archaeological site 30 km to the southeast, Koi Krylgan Kala, another major component of the "Fifty fortresses oasis".