On the Opinion of Dionysius
- By St. Athanasius. John Henry Newman translation and notes, edited by Archibald Robertson. Athanasius argues against the Arians, who were attempting to claim Dionysius as one of their own. From the Nicene and Post-Nicene Fathers of the Christian Church,
- http://www.ccel.org/ccel/schaff/npnf204.xv.html

For All the Saints: Dionysius of Alexandria
- Biographical portrait.
- http://www.saintpatrickdc.org/ss/1117.htm#dion

Dionysius of Alexandria, Bishop and Scholar
- With prayer in traditional and contemporary language.
- http://elvis.rowan.edu/~kilroy/JEK/11/21.html

Catholic Encyclopedia: Dionysius of Alexandria
- Also called Dionysius the Great, bishop, d. 264 or 265. Feast day: 17 November.
- http://www.newadvent.org/cathen/05011a.htm