Diyllus (Greek: Δίυλλος), probably the son of Phanodemus the Atthidographer (a chronicler of the local history of Athens and Attica), wrote a universal history of the years 357–297 BC. Only fragments of his work survive. Both the historian Diodorus Siculus and the biographer Plutarch valued Diyllus as a competent authority.
- Felix Jacoby, Die Fragmente der griechischen Historiker, (1923).
- Albin Lesky, A History of Greek Literature, (1966).
- Oxford Classical Dictionary (1949).