Is the supposed author of a diary of the Trojan War which we possess in Latin. In the preface, written in the 4th cent. ad, Lucius Septimius claims that he translated the work from a Greek version prepared for Nero from a Phoenician original. Dictys claims to have been present at the siege of Troy. Like the narratives of Dares Phrygius his diary is probably a fabrication, but the two were the chief sources of medieval Trojan legends.