Diocles

Diocles may refer to:

• Diocles (mathematician) (c. 240 BC – c. 180 BC), Greek mathematician and geometer
• Diocles (mythology), one of the first priests of Demeter
• Diocles of Carystus, also known as Diocles Medicus, 4th century BC Greek physician
• Diocles of Cnidus, Greek philosopher who wrote a work quoted by Eusebius
• Diocles of Corinth, winner of the stadion race of the 13th Olympic Games in 728 BC
• Diocles of Magnesia, Greek writer on ancient philosophers quoted many times by Diogenes Laertius
• Diocles of Messenia, winner of the stadion race of the 7th Olympic Games in 752 BC
• Diocles of Peparethus, Greek historian in the 3rd century BC
• Diocles of Syracuse (fl. 413–408 BC), Greek lawgiver in the city-state of Syracuse
• Diocletian (244–311), Roman emperor formerly named Diocles
• Gaius Appuleius Diocles, Roman charioteer