Caspiomyzon is a genus of lamprey in the family Petromyzontidae.

They are native to Eastern Europe and parts of Western and Central Asia.

[2][3] Phylogenetic studies indicate that they are the most basal members of the family Petromyzontidae, and their lineage diverged from the other genera in the family (Petromyzon and Ichthyomyzon) in the Late Cretaceous.

The wagneri lineage diverged from the graecus+hellenicus lineage during the Eocene, although both Greek species only diverged during the late Pliocene.

[4] Unlike other lampreys, species of Caspiomyzon are suspected to feed on carrion rather than live prey.