- H SAM
- H2LiftShips - Beyond Luna
- H2O
- Habaneria - The Return of the Havanese
- Hadrian's Flight
- Hail Warning (Hail 2)
- Hal 9000
- Half Past Alligator and The Celestial Hammerlock
- Halfkinds: Survival and Superiority (Volume 1 - Contact)
- Halfkinds: Survival and Superiority (Volume 2 - Horus)
- Haloband
- Hammer of Fate
- Hammerfall
- Hammerjack
- Hand of God
- Handsome Rob Assassin
- Hard Bargain
- Harmonics: Rise of the Magician
- Harmonics: The Jadian Sun
- Harmony
- Harmony's Passing
- Hartmann the Anarchist
- Harvesting Ashwood
- Harvey
- Haskel Van Manderpootz & Dixon Wells' Adventures
- Have You Tried the Mountain?
- Hawksbill Station
- Heal-X
- Healer
- Heart of the Stormblade
- Heat Seeker
- Heaven on Earth
- Heavy Weather
- Heed the Dark Light
- Hegira
- Heiliger Zorn
- Heimat Mars
- Hell Divers. Адские ныряльщики
- Hell Divers. Адские ныряльщики. Призраки
- Hell's Roundabout
- Helldive
- Hellhounds of the Cosmos
- Hellhounds of the Cosmos and three more stories
- Helots. La speranza del Firewalker
- Henry Horn's X-Ray Eye Glasses and three more stories
- Henry Parker's Robot Wars: Firestorm
- HER DARK MATTER NECKLACE
- Here Be Dragons
- Herederos de la Singularidad
- Heretic
- Hero
- Heroes of Old
- Herrschaft der Alten
- Het zwaartekrachtprobleem
- Hetzjagd im All
- Hidden Federation
- Hidden Variables
- High Flyer
- High Justice
- High-Rise
- Higher Education
- Hijos perfectos para sistemas imperfectos
- Hilldiggers
- Hired Self-killer or The Winner’s Trial. A Story About the Truth of Life and the Truth of Art
- His Master's Voice
- His Robot Wife
- History of The Saplings
- History Quest
- Hodoeporicon (Finalista Premio Urania 2012-2013)
- Hollytime
- Hologram Dreams
- Home World
- Homefront
- Homesick
- Homo Animalis. Бремя славы
- Homo Futuris
- Honor Harrington: Der Sklavenplanet
- Honor Harrington: Die Spione von Sphinx
- Honor Harrington: Im Exil
- Honor Harrington: Jeremy X
- Honors Rache
- Hope: The Aliens
- Horizons
- Horrific Alien Abduction
- Horsemen of Mars
- Hot Sky at Midnight
- Hot Times in Magma City
- How I Defied the Gods of Cyber Space and Lived
- How My Brain Ended Up Inside This Box
- How to Build a Time Machine
- Hull Zero Three
- Human Again
- Human in Rush: Tworzenie
- Human Into Robot
- Human Perfect
- Human Procurement: A Short Story
- Human Starpilot
- Humang: Machinosus Inimicus Rex and the Kid from W.H.O.A.
- Humanity's Fight
- Humanity's Mirror
- Humanity's Testament
- Humanité en Danger
- HumanWare
- Humble Beginnings
- Humble Giants
- Humble Giants (Alien)
- Humint
- Hungry
- Hunt the Space-Witch!
- Hunted
- Hunters Out of Space
- Hunting Handsome Rob
- Hunting the Corrigan's Blood
- Hurrah for the Class of 05
- Hurricane Moon
- Hydrogen, Mister President: Energy War 2.0
- Hyos, The Sleep Machine
- Hyperspeed
- Hypervisor One : A d.o.mai.n Short Story Collection
- Höllenplanet - Chronik der Sternenkrieger #7