Pope Dionysius (died 268) was a Greek pope.

Saint Dionysius may also refer to:

• Saint Dionysius of Alexandria (died 265), Bishop of Alexandria
• Saint Dionysius of Corinth (died c. 171), Bishop of Corinth
• Saint Dionysius of Paris (died c. 250), Christian martyr
• Saint Dionysius the Areopagite (1st century), judge of the Areopagus
• Geevarghese Dionysius of Vattasseril or Saint Dionysius of India (died 1934), Primate of the Indian Orthodox Church

• Agios Dionyssios (disambiguation)
• Dennis (disambiguation)
• Dionysos (disambiguation)
• Saint Denis (disambiguation)
• San Dionisio (disambiguation)

This disambiguation page lists articles about people with the same name.
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