Dennis O'Neil (b. May 3, 1939 – d.June 11, 2020) was a writer.
Denny O'Neil's best-known works included Green Lantern/Green Arrow and Batman with Neal Adams, The Shadow with Mike Kaluta and The Question with Denys Cowan, all of which were hailed for their sophisticated stories that expanded the artistic potential of the mainstream portion of the medium. As an editor, he was principally known for editing the various Batman titles. He also sat on the board of directors of the charity The Hero Initiative.
- Dennis O'Neil/Executive Editor
- Dennis O'Neil/Editor
- Dennis O'Neil/Writer
- Dennis O'Neil/Letterer
- Dennis O'Neil/Creations