Memnon of Heraclea was a Greek historian from Heraclea Pontica who lived during the 1st or 2nd century CE. No biographical details survive beyond his origin and profession. His work identifies him as a local historian, or horographer, focused on his native city, a common genre in the period. His floruit is inferred from his history’s coverage, which extends to the Roman civil wars after Julius Caesar’s death.

His sole known work is the History of Heraclea, a local history surviving only in fragments. It is preserved primarily through excerpts in the 9th-century Bibliotheca of Photius. Photius’s summary indicates the history spanned 16 books, narrating events from the city’s mythical foundation up to the Mithridatic and Roman civil wars in the region.

Memnon’s significance lies in his value as a source for Black Sea and Hellenistic history. His fragments provide crucial, though sometimes legendary, information on Heraclea’s internal politics, its tyrants, and its interactions with Persia, Macedonia, and Rome. The work preserves local traditions and data essential for studying Greek colonization and Roman expansion into Asia Minor.