- Instrument of Chaos
- Instrument of Fate
- Instrument of Peace
- Instrument of War
- Instytut Badań Pozaziemskich
- Insubordination
- Insufficient
- Insula doctorului libris
- Insurgency
- Insurgent (prequel 2 of Hunted)
- Insurmountable Odds
- Insurrecição
- INSURRECTIO
- Insurrection
- Insurrection - Book 2 - Soliloquy's Labyrinth Series
- Insynn (NINE Series, #3)
- Insynnium
- Insólitas
- Intangible
- Intarissable
- Integer Blue
- Integra-Man and The Golden City
- Integrate
- Integridade: Uma História da Bela e a Fera
- Integrity
- Intellect
- Intellectual Property
- Intelligence
- Intelligences
- Intelligent Design
- Intelligent Design II: Apocalypse
- Intelligent Design: Revelations
- Intelligent Design: Revelations to Apocalypse
- Intelligent Design:Revelations
- Intelligent Things
- Intempor'Elles
- Intended Bondmates
- Intense Escapes
- Intensive Training
- Intentional
- Intentional
- Intentional Dissonance
- Intentions
- Inter Active
- Inter-Galactic Bounty Hunter Series Bundle 1
- Inter-Ocean Hunting Tales
- Interact Il Gran Maestro del Gioco
- Interactive Fiction Adventure Story for Kids: The Summer Orphan
- Interagency Cooperation
- Interceptions
- Intercession
- Intercession: Taylor Neeran Chronicles #3
- Interchange
- Intercity Illusions
- Interdictor
- Interdictum
- Interdimensional Travel for Dummies
- Interestelar
- Interesting Creatures
- Interfaccia Estrema
- Interface Masque
- Interference
- Interference Cycle
- Interference Disability
- Interferenze
- Interfictions
- Interfictions 2
- Intergalactic Agent Bride
- Intergalactic Alliance - A Galaxy of War
- Intergalactic Bogtrotter
- Intergalactic Love : Alien Abduction Romance
- Intergalactic Mate : Sci-Fi Alien Romance Collection
- Intergalactic Nuthouse
- Intergalactic Sweet Shop
- Intergalactic Tribunal
- Intergalactic Words: Articles for Consideration
- Intergalactica
- Intergaláctica (La Trilogía Completa)
- Interi oscuri
- Interlaced Pathways
- Interlaced Pathways: Contemporary Fantasy Tales
- Interlibrary Loan
- Interlink
- Interloping Segments
- Interlude
- Interlude of Pain (Zaran Journals, Book 3)
- Interlude: A Series of Shorts
- Interludes
- Intermediates: A Cuckoo for Mankind
- Intermundia
- Intern
- Intern'al Struggles: Legends of Steve the Wizard Episode 5
- Internat der Vampire
- International Fantasy Novella Bundle 2020
- International Short Stories (English Stories)
- International Short Stories (French Stories)
- Internet 2022
- Internet Hate Machine
- Internet Hate Machine: Book I: The American Nightmare
- Internet Hell
- Internet Warrior
- Internment
- Interplanetary
- Interplanetary Tales
- Interplay
- Interpretaciones de la ciencia ficción
- Interpreter
- Interrogation (A Short Story)
- Interrogation and Litigation, the Nightmare
- Interrogation Techniques
- Interrogation: An Agent of The Emperor Science Fiction Short Story
- Interrupted Magic
- Interrupting Starlight
- Interruption
- Interruptions
- Intersection With Nibiru
- Intersection: Joe Ballen, Book Four
- Intersections 2021