D'Ken
- D.O.A.
- Doc Samson
- Doctor Bong
- Doctor Decibel
- Doctor Demonicus
- Doctor Doom (aka Victor von Doom)
- Doctor Doomsday (Amalgam Comics)
- Doctor Dorcas
- Doctor Druid
- Doctor Faustus (aka Johann Fennhoff)
- Doctor Glitternight
- Doctor Minerva
- Doctor Nemesis
- Doctor Octopus
- Doctor Sax
- Doctor Spectrum
- Doctor Strange
- Doctor Sun
- Doctor Tambura
- Doctor Volkh
- Kenneth Dolan
- Stacy Dolan
- Domina
- Dominas
- Domino
- Dominus
- Domo
- Donald & Deborah Ritter
- Donovan, Arnold "Lefty" (aka Hobgoblin II)
- Doom 2099
- Doorman
- Doop
- Doppelganger
- Doppleganger
- Dorcas, Lemuel (aka Tiger Shark)
Read more about this topic: Dagoth