- Seen The Elephant, Heard The Owl
- Seer of Mars
- Seetee Alert!
- Seetee Ship
- Seetee Shock
- Seg the Bowman [Dray Prescot #32]
- Segredos do Universo
- Seifenblasen
- Seized
- Sekret Machines Book 1: Chasing Shadows
- Sekret Machines Book 2: A Fire Within
- Sela Book 1: The Abyss
- Selai
- Selected Short Stories
- Selected Short Stories Featuring Analog Memory
- Selected Short Stories Featuring Cinderella Shoes
- Selected Short Stories Featuring Cockfight
- Selected Short Stories Featuring Cry Wolf
- Selected Short Stories Featuring New Corpse Smell
- Selected Short Stories Featuring Save As
- Selected Stories of H. G. Wells
- Selected Works of H. G. Wells
- Selena's Escape
- Self Sufficiency: Resilience, Country Living, Growing Food; Plausible Near Future Disruption: Power ...
- Self-Determination
- Self-Reference Engine
- Selfies From the End of the World: Historical Accounts of the Apocalypse
- Selfish Beings
- Sellenria: The Starship and the Citadel
- Selling Out
- Semi/Human
- Semper Audacia
- Semper Lupa
- Semper Mars
- Semper Simul
- Semper Supra
- Senciente nível 5
- Senhores da escuridão
- Senior Village "senior-Vill-I-Age"
- Senna Versus Schumacher And Other Formula One Rivalries That Never Happened
- SENOVĖS DIDVYRIAI: Epizodas 1x01 (Lietuvių leidimas)
- Sense of Obligation
- Sense of Wonder
- Sensibleman Episode 1: The Origin
- Sensing Danger
- Sensing Danger 2: Capture
- Sensing Danger 3: Freedom
- Sensorium
- Sensory Alterations
- Sensual Sexual Romance
- Sentaku: A Short Story Anthology
- Sentenza Capitale
- Sentience
- Sentient
- Sentient World
- Sentiments à vendre
- Sentinel
- Sentinels of Tzurac: Terra Major Under Threat
- Sentry
- Sentry of the Sky
- Sentry Peak
- Sentry Squad
- Seond Landing and four more stories Vol I
- Seph
- Sept jours dans le temps
- SeptStar
- Sepulcro de canciones (Flash Relatos)
- Sequoian Escape
- Sera and the Dragon
- Serah of the Runners
- Seraphim Sky
- Sereine: Book One of the Hunter Trilogy
- Seren Valley Tales.
- Seren1ty
- Serendipity
- Serial Killer vs. E-Merica
- Serpent of the Sun
- Serpent's Gift (StarBridge #4)
- Serpentine Fire
- Serpents' Teeth
- Sertian Princess
- Servants of Man: Expanded Edition
- Servants of the Legacy
- Set Ablaze
- Set de la Colonia
- Seth Carter’s Alien Adoption
- Setting The Board
- Settled on the Coast
- Settling the World
- Seven Before the World
- Seven By Jay: Seven Short Stories
- Seven Day War
- Seven Days in May
- Seven Devils
- Seven Footprints To Satan
- Seven from the Stars
- Seven Lives
- Seven of Infinities
- The Dystopia Game: A Complete Novel
- The Dystopia Game: Episode One
- The Dystopia Game: Episode Two
- Seven Sexy Cowboy Robots
- Seven Skies
- Seven Tales in Amber
- Seven Tales of Blood and Beauty
- Seven Views of Olduvai Gorge
- Seven Winter Tales: Volume 1
- Seveneves
- Seventh Journey
- Several Things at Once
- Severed
- Severed Galaxy
- Sex and Death
- Sex and Love in the Long Night: A Tale of Romantic Sex
- Sex Clone
- Sex on His Mind
- Sex, Drugs, and Starships
- Sex, The Stars & Princess Simla
- Sexbot
- Sexchanger: The Alien Gender-Switching Machine