Schizaster is a genus of heart urchins belonging to the family Schizasteridae.

The type species of the genus is Schizaster studeri.

Extant and extinct species within this genus include:[1][2][3] The fossil record of the genus dates back to the Paleocene (age range: 66.043 to 0.012 million years ago).

These fossils have been found all over the world.

This article about a sea urchin is a stub.