Dionysius

Several people in history have been known by the name Dionysius:

• Dionysius Exiguus, a Dacian monk who helped set the date of some Christian holidays
• Dionysius Telmaharensis, a former head of the Syrian Jacobite Church
• Dionysius Halicarnassensis, a Greek scholar of the Roman period
• Dionysius Lardner, an Irish scientific writer
• Dionysius of Syracuse, a tyrant
• Pope Dionysius
• Dionysius the Elder, a Greek mythological figure
• Pseudo-Dionysius the Areopagite, an author of unknown identity who wrote under the name Dionysius