- Houlihan’s Equation
- Hour of the Horde
- Hour of the Robot
- House of Falling Rain
- House of Many Changes
- House of Shards (Maijstral 2)
- House of Steel
- House of the Galactic Elevator
- House of the Orion Sun: Mission 3
- House of Zeor
- House on the Bluff: Legacy Series, Vol. 1
- Household Gods
- Hoverrim the Hunted
- How a Hero Breaks a Vault
- How Few Remain
- How Firm a Foundation
- How Green This Land, How Blue this Sea
- How I Met My Alien Bitch Lover: Book # 1 from the Sunny World Inquisition Daily Letter Archives
- How I Saved a Planet!
- How It Feels to Be Water
- How The Hell Do We Get Home From Here?
- How The New Gods Terminated The Armageddon Virus: A Pulp Sci-Fi Tale
- How the World Was One
- How To Be A Spaceman
- How to Become Golden
- How to Herd an Asteroid
- How to Live Safely in a Science Fictional Universe
- How to Make a Zombie
- How to Move Spheres and Influence People
- How to Think Inside the Box
- Howard Hill
- Howling Dark
- Howling Stars
- Hrolf Kraki's Saga
- Humaliens
- Human Perfect
- Human's Burden
- Humanity First
- Humanity Rising
- Humanity's Mirror
- Humanity's Second Chance
- Humanité en Danger
- Humanité zéro - Livre I
- Humanoid Puppets
- Humans Remade
- Humans Still
- Humans, Bow Down
- Humint
- Humpty Dumpty
- Humpty Dumpty In Oakland
- Humpty Dumpty: An Oval
- Hundssterne - Chronik der Sternenkrieger #34
- Hunger Games - Ballata dell'usignolo e del serpente
- Hunt for Balerophon
- Hunt the Space-Witch!
- Hunt the Stars
- Hunt You Down
- Hunted
- Hunted By The Alien General
- Hunted by the Alien Vampire
- Hunter
- Hunter - After The Fall
- Hunter and Prey
- Hunter Stalked
- Hunter's Rise
- Hunters
- Hunters of Dune
- Hunters of the Red Moon
- Hunting Handsome Rob
- Hunting Hope - Teil 1: Zerbrochene Herkunft
- Hunting Hope - Teil 2: Zerrissen
- Hunting Hope - Teil 3: Zerrüttete Träume
- Hunting Hope - Teil 2: Zerrissen
- Hunting Hope - Teil 3: Zerrüttete Träume
- Hunting John Doe
- Hunting Light
- Hunting Mink
- Hunting Party
- Hunting Season
- Hunting Shellot
- Hunting the Corrigan's Blood
- Huntress of the Star Empire Part 1 The Chase
- Huntress of the Star Empire Part 2 The Snare
- Huntress of the Star Empire Part 3 The Catch
- Huntress of the Star Empire Part 4 The Release
- Huntress of the Star Empire: The Complete Series
- Hurbi Hancock and the Dream Machine
- Hurok of the Stone Age
- Hurrah for the Class of 05
- Hurricane
- Hurricane Island
- Hurt World One and the Zombie Rats
- Hviezdoveda
- Hybrid
- Hybrids, Volume Three: Fear
- Hybryda
- Hydorgol - Flucht
- Hydra
- Hydro Force
- Hydrogen Steel
- Hyos, The Memory Planet
- Hyos, The Sleep Machine
- Hyperactive
- Hypercube, tome 1 : le secret d'Eden Light
- Hyperia Jones and the Olive Branch Caper
- Hyperion
- Hypervisor One : A d.o.mai.n Short Story Collection