Hyperochus of Cumae was a Hellenistic historian, estimated to have lived between the 3rd and 1st centuries BCE. No biographical details survive beyond his name and origin, which are preserved solely through citations in later works.

He is known for a single, lost work: On Cumae, a local history of the Greek colony of Cumae in Italy. The work survives in fragments, primarily quoted by the geographer Strabo and the Byzantine scholar Stephanus of Byzantium.

Hyperochus’s significance lies in his value as a fragmentary source for the history and foundation myths of Magna Graecia. His work was used as an authority on Cumae’s early history, its relations with neighboring Italic peoples, and local traditions, exemplifying the Hellenistic genre of local historiography.