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
- Dionysius the Areopagite, a citizen of Corinth who was converted by Paul of Tarsus
- Pseudo-Dionysius the Areopagite, identified by some with a Georgian theologist Peter the Iberian (411 - 491), author of Corpus Areopagiticum