Pope Dionysius (died 268) was a Greek pope.
Saint Dionysius may also refer to:
Dionysius the Areopagite (died late first century), Greek bishop and judge of the Areopagus Dionysius of Corinth (died ), Bishop of Corinth Dionysius of Paris (died ), Christian martyr Dionysius of Alexandria (died 265), Bishop of Alexandria Dionysius (died 447), one of the Seven Sleepers of Ephesus Dionysius Exiguus (), Byzantine monk who invented AD dating Dionysius Vattasseril (1858–1934), or Dionysius of India, primate of the Indian Orthodox Church
See also Agios Dionyssios (disambiguation) Dennis (disambiguation) Dionysos (disambiguation) Saint Denis (disambiguation) San Dionisio (disambiguation)