Heraclitus Paradoxographus (Greek: Ἡράκλειτος) is the author of the lesser-known of two works known as Peri Apiston (On Unbelievable Tales).
Heraclitus' Peri Apiston treats Greek mythology in the rationalizing manner that appealed to Christian apologists, in pithy language and thought.
The text survives in a single 13th-century manuscript in the Vatican Library; it has minor imperfections, and it may well be a late Byzantine epitome of a longer work.
Heraclitus has four methods of explanation, all prominent in late Hellenistic and Roman interpretations: rationalization (that the myth represents a misunderstanding of a natural event), euhemerism, allegory, or fanciful etymology.
Among extant mythology collections this text is of particular interest precisely because it exemplifies in brief compass, such a range of ancient strategies for the interpretation of myth.