Trochocyathus is a genus of corals in the family Caryophylliidae.

Living species are found in waters near Hawai'i at depths of 64 to 1,020 meters (210 to 3,346 ft).

[1] Fossil species are found as far back as the latest Paleocene in the Dilwyn Formation of Australia,[2] in the late Cretaceous in the Woodbury Formation of New Jersey,[3] and in Suffolk.

[4] Platycyathus is sometimes regarded as a subgenus within Trochocyathus.

This Scleractinia-related article is a stub.