D
- Dai Thomas
- Daniel Toliver
- Daredevil (Murdock, Matthew "Matt") - dead
- Dazzler (Blaire, Allison "Ali") - dead
- Deacon Frost
- Deadpool (Wilson, Wade)
- Death Adder (unknown)
- Deathlok (unknown)
- Deathstrike (Oyama, Yuriko) - dead
- Derek Morgan
- Detonate (Johnson, Mike) - dead
- Detonator (Gibson, Ricky) - dead
- Diablo (Esteban Corazon de Ablo) - dead
- Doctor Doom (Van Damme, Victor)- dead
- Doctor Octopus (Octavius, Otto) - dead
- Doctor Strange (Strange, Stephen Senior) - unknown
- Doctor Strange (Strange, Stephen Junior) - dead
- Dolores
- Domino
- Donald Roxxon
- Doombot
- Dr. Spectrum (Squadron Supreme)
- Dr. Faustus
- Dreadknight (Bram Velsing)
- Dreamcatcher
Read more about this topic: List Of Ultimate Marvel Characters