Epithalassius is a genus of flies in the family Dolichopodidae,[2] with eight known species.

They are generally found in the Palaearctic, occurring on sand beaches near the coast.

[3] An exception to this is E. africus, which was described from a damaged female specimen collected near Brazzaville in the Republic of the Congo.

[4] E. corsicanus has also been recorded from Saint Helena in the Atlantic Ocean, and is probably an introduced species to the island.

This article related to members of the fly family Dolichopodidae is a stub.