- Invasion der Außerdirdischen in Berlin Mitte
- Invasion der Friedensbringer
- Invasion der Qalaak
- Invasion der Roboter
- Invasion from 2500
- Invasion From Planet Wrestletopia
- Invasion of the Alien Snatchers
- Invasion of the Body Snatchers
- Invasion of the Book Snatchers
- Invasion of the Vox Lagomorpha
- Invasion von den Sternen: 1500 Seiten Science Fiction Abenteuer Sammelband
- Invasion: Earth
- Invasive Procedures
- Invasive Procedures: A Novelette
- Invasive Procedures: Stories
- Invasive Species
- Invasión
- Inventing Stars
- Inversion
- Inversion Aversion
- Inversion Point
- Inversionen
- Inversiones
- Inversions
- Inversión Primaria
- Inverted World
- Investigation
- Invidious Betrayal
- Invincible
- Invisibility
- Invisible
- Invisible Barriers
- Invisible Death
- Invisible Sun
- Invisible Things
- Invito Rex
- Involuntary Time Traveler
- Involution Ocean
- Involve
- Invydia
- Inwazja z Ganimedesa
- Io, Sergente
- Ionasae Rendezvous
- Ionic Barrier
- Ionic Racing
- Iranons vandring & Polaris
- Iris
- Iron Angels
- Iron Council
- Iron Crowned
- Iron Curtain
- Iron Dart
- Iron Dart (Illustrated)
- Iron Fist
- Iron Five: Dogs of War
- Iron Gods
- Iron Gold
- Iron Gray Sea
- Iron Horses Can't Be Broken
- Iron Kingdoms Excursions: Season One Collection
- Iron Kingdoms Excursions: Season One, Volume Four
- Iron Kingdoms Excursions: Season One, Volume One
- Iron Kingdoms Excursions: Season One, Volume Three
- Iron Kingdoms Excursions: Season One, Volume Two
- Iron Kingdoms Excursions: Season Two, Volume Five
- Iron Kingdoms Excursions: Season Two, Volume Four
- Iron Kingdoms Excursions: Season Two, Volume Six
- Iron Kingdoms Excursions: Season Two, Volume Three
- Iron Kingdoms Excursions: Season Two, Volume Two
- Iron Lazarus
- Iron Pirate
- Iron Sky - Renaten tarina
- Iron Sunrise
- Iron Tears (An Iron Souls Novella)
- Iron Warrior
- Iron Winter
- Ironbark Creek
- Ironbark Creek Bloodlines
- Ironcastle
- Irondead - Der achte Tag
- Irondead - Der zehnte Kreis
- Irons in the Fire
- Irontown Blues
- Iroth
- Irradiated
- Irrbloss: Häxmästaren 6
- Irrflug ins Ungewisse
- Irsud
- Irïan T1 - Semblables
- Irïan, T2 : Le miroir
- Irïan, T3 : Lieurs d'univers
- Is och eld: Sagan om Isfolket 28
- Isaac Asimov's I Robot: To Obey
- Isaac Asimov's I, Robot: To Preserve
- Isacc Asimov's I, Robot: To Protect
- Isaleer Horus
- Isard's Revenge
- ISCARIOT. Книга 1. Выжить любой ценой
- ISCARIOT. Книга 2. Обмануть смерть
- Isdraken
- ISKOMO
- Island
- Island Alien
- Island Fire
- Island in a Sea of Stars
- Island of Clouds
- Island of the Dead
- Islands
- Islands in the Net
- Islands in the Sky
- Islands In Time
- Islands of Rage and Hope
- Islands of Space
- Islands of Space (Serapis Classics)
- Isle of Stumps
- Isle of the Undead
- Isobar Precinct
- Isolation
- Issabel de Qohosaten
- Issue In Doubt
- It All Changes Now
- It Came From Hyperspace!
- It Came From Outer Space
- It Came From Outer Space!
- It Could Be Anything
- It Gives You Strength
- It Never Left
- It Takes a Thief
- It Takes a Thief to Catch a Sunrise
- It Takes a Thief to Start a Fire
- It Takes Death to Reach a Star
- It Took a Zombie Apocalypse
- It Was 2035, Quake
- It Was 2052
- It Was 2052, High Haven
- It Was 2065, Life on Earth
- It was a Small Affair
- It Was Always Her
- It's A Small Galaxy
- It's All Yours
- It's Darker This Way
- It's Darkest This Way
- It's Harder This Way
- It's in the Cards
- It's No Worse Than The Common Cold
- It's Only A Clockwork Moon
- It's Sciency wiency stuff!
- Itchiwan
- Ithaka Rising
- It’s a Trap (When the World Ended and We Were Invaded: Season 3, Episode #7)