- Decision
- Decision Hero
- Decision Point
- Decisiones
- Decisioni
- Decker's War: Books 1-3
- Decoded Pride Issue #1: Special eBook Edition
- Decoded Pride Issue #2: Special eBook Edition
- Decomposing Angel
- Deconstruction - A History Department Misadventure
- Deconstruction: Prologue to Relics of Dawn
- Decreation
- Dedans, dehors
- DeeDeck Design
- DEEDS AND GREED
- Deep
- Deep Black Sea
- Deep Breath Hold Tight
- Deep Claim
- Deep Crossing
- Deep Cuts from the Edge of Never
- Deep Descent
- Deep Destruction
- Deep Dive
- Deep Dreams Enough. Stories
- Deep Echoes
- Deep Future
- Deep Hell
- Deep Ice
- Deep In Holy Land Ground
- Deep Mind
- Deep Naked
- Deep Space Dragnet
- Deep Space Interface
- Deep Space Rescue 911
- Deep State
- Deep Storm
- Deep Strike
- Deep Time
- Deep Water
- Deeper than the Darkness
- Deepfreeze and Three More Stories
- Deepsix
- DeepStorm OutTack
- DEF: Wrath of the Gods - The Journey to the Black Mountains
- Defeat The Aliens
- Defeating the Storm
- Defect
- Defekt
- Defekt
- Defender
- Defender of the Flame
- Defenders
- Defenders of Valinthia
- Defending Freedom
- Defending Hope
- Defending the Galaxy
- Defiant, She Advanced
- Define Love, or: Pick a Lane, Asshole!
- Definitely Maybe
- Defy The Sky
- Defying Doomsday
- Defying Mars
- Degrees of Freedom
- Dehors, les hommes tombent
- Dehumanized
- Dehydration
- Deity Six
- Deja Vu
- Deke Brolin Rhol
- Dekon
- Del nome dei numeri e della riparazione del cielo
- Deleted
- Deletion
- Delhi De Kingre
- Delia of Vallia [Dray Prescot #28]
- Delicate Spring Flowers
- Delicious Zeal
- Delightfully Twisted Tales: Close Encounters of the Worst Kind (Volume One)
- Delightfully Twisted Tales: Family Antimatters (Volume Six)
- Delightfully Twisted Tales: The Future of Future Planning (Volume Nine)
- Delightfully Twisted Tales: The Wide, Wide World of Weird (Volume Seven)
- Delilah's Valor
- Delirious Doubles Presents The Impossible Child & The Games Go On
- Delirium
- Delirium tremens
- Delirium Trilogy
- Delitto a Geektopia
- Delivery
- Delos Science Fiction 170
- Delos Science Fiction 171
- Delos Science Fiction 173
- Delos Science Fiction 174
- Delos Science Fiction 175
- Delos Science Fiction 176
- Delos Science Fiction 177
- Delos Science Fiction 178
- Delos Science Fiction 179
- Delos Science Fiction 180
- Delos Science Fiction 181
- Delos Science Fiction 182
- Delos Science Fiction 183
- Delos Science Fiction 185
- Delos Science Fiction 186
- Delos Science Fiction 187
- Delos Science Fiction 188
- Delos Science Fiction 189
- Delos Science Fiction 190
- Delos Science Fiction 191
- Delos Science Fiction 192
- Delos Science Fiction 193
- Delos Science Fiction 194
- Delos Science Fiction 197
- Delos Science Fiction 200
- Delos Science Fiction 201
- Delos Science Fiction 208
- Delos Science Fiction 209
- Delos Science Fiction 210
- Delos Science Fiction 211
- Delos Science Fiction 213
- Delos Science Fiction 215
- Delos Science Fiction 216
- Delos Science Fiction 217
- Delos Science Fiction 218
- Delos Science Fiction 219
- Delos Science Fiction 220
- Delos Science Fiction 221
- Delos Science Fiction 222
- Delos Science Fiction 223
- Delos Science Fiction 224
- Delos Science Fiction 225
- Delos Science Fiction 226
- Delos Science Fiction 227
- Delphi Complete Works of H. G. Wells
- Delphi Promised
- Delphus: Rite of Passage
- Delta City
- Delta Pi
- Delta-v
- Deltan Skies
- Deltas
- Deluge
- Deluge II
- Delusion World
- Deluxe Steamy Alien Romance Collection