- Sogni bugiardi
- Sohn der Lüfte
- Sohng
- Sois Sage
- Sojan the Swordsman
- SoJourn
- Sojourners
- Sol
- Sol Invictus
- Sol Survivor
- Sol's Sci-fi Thirdly Magazine Issue 2
- Sol's Triad
- Solace of Time
- Solan
- Solar Express
- Solar Federation
- Solar Rain: Raging Waters
- Solar Sailing
- Solar Search
- Solar Stiff
- Solar Weapon
- Solaris (Andrei Tarkovsky): Umanitatea dezumanizată
- Solaris 189
- Solaris 190
- Solaris 191
- Solaris 192
- Solaris 193
- Solaris 194
- Solaris 195
- Solaris 196
- Solaris 197
- Solaris 198
- Solaris 199
- Solaris 200
- Solaris 201
- Solaris Seethes
- Solaris Seethes (The Complete Saga)
- Solaris Soars
- Solaris Strays
- Solarpunk
- Solarpunk: Ecological and Fantastical Stories in a Sustainable World
- Solarpunk: Histórias ecológicas e fantásticas em um mundo sustentável
- SolAs
- Solastria
- Solatium: An Aurora Rhapsody Short Story
- Sold - For a Spaceship
- Solder Achieved
- Soldier
- Soldier of Charity
- Soldier of Fortune
- Soldier of Light
- Soldier of the Legion
- Soldier, Ask Not
- Soldierina
- Soldiers of Misfortune: Forerunners
- Soldiers of Misfortune: Grudge Match
- Soldiers Out of Time
- Soldiers! A Chronicle from the 31st Century (Part One)
- Sole giaguaro
- Sole pirata
- Soledad - Dark Republic Book One
- Soleil vert
- Solitary
- Solitude
- Sollevami
- Solo Command
- Solo Elite The Great Awakening
- Solo for Concert Grand
- Solo Le Informazioni Pertinenti
- Solo una brutta giornata
- Solo: A Star Wars Story
- Solomon Kane: The Collection
- Solomon Teacher's Quest
- Solomonder's Iron
- Solus: Starship Nightmare
- Solution
- Solution Uprising : Prossia Book 3
- Soluzione Omega
- Soléa
- Sombras en fuga (Saga de la Sombra de Ender 5)
- Some More, And Yet Still Even More Things I Could Get Out of My Mind
- Some of My Best Friends Are Human
- Some of the Best from Tor.com: 2011 Edition
- Some of the Best from Tor.com: 2012 Edition
- Some of the Best from Tor.com: 2014
- Some of the Best from Tor.com: 2016
- Some of the Best from Tor.com: 2020 Edition
- Some of Your Blood
- Some Sci-Fi for the Stage
- Some Will Not Die
- Someone to Remember Me
- Something Blue
- Something Borrowed, Something Blew
- Something Borrowed, Something Doomed
- Something Going Around
- Something Known
- Something New Every Day
- Something to Remember You By
- Something Wild Is Loose
- Something Wild is Loose
- Sometime Tomorrow
- Sometimes the Dragon Wins
- Sometimes The Good Guys Lie
- Sometimes We Ran
- Sometimes We Ran 3: Rescue
- Somewhere in the long forgotten future
- Somewhere To Run To
- Sommeil aboli
- Sommeil des arbres-machines (Le)
- Somnium - Eine Reise zum Mond
- Somniverse
- Son Cephede Şafak
- Son nom est Sothy: La malédiction du Bouddha d'or
- Son of Man
- Son of the Wolf
- Son of Thunder
- Son of Zog
- Song In a Minor Key
- Song in the waves
- Song of Death
- Song of Deerwoman
- Song of Kali
- Song of the Badlands
- Song of the Elowai
- Song of the Soulless
- Song Walker: Starseeds One
- Song's End
- Songbird at Midnight
- Songs of Thalassa
- Songs of the Beinarian Court: A Poetry Collection
- Songs of the Dancing Gods
- Songs of the Dying Earth
- Sonhando com as Flores
- Sonhos
- Sonnenstürme
- Sonnentaucher
- Sonnet of the New Dawn
- Sonno verde