- Harm's Way
- Harmony's Way
- Harness the Stars
- Harper's War
- Harrow the Ninth
- Harrowed Blade
- Harrows Gate
- Harry Seven
- Harry Watt Bounty Hunter
- Harry's Journal
- Hartmann the Anarchist
- Harvest
- Harvest (Stories of Singularity 5)
- Harvest Festival
- Harvest of Change
- Harvester 7
- Harvey Travels to Andromeda
- Hassian le Guerrier
- Hatched
- Hatchlings
- Hateland 2128
- Hater
- Hatred
- Hatshepsut's Collar
- Haunted Alien Honeymoon
- Haunter Grey Origin
- Haunter Grey: Journey
- Haunter Grey: Outliers
- Haunter Grey: Upheaval Boxed Set: Includes Origin and Journey
- Have Demon, Will Travel
- Have Tech Will Travel
- Havenworld: Phase One Omnibus
- Having Nice Things
- Havoc Canyon
- Havoc Storm
- Havre (Les derniers humains : Tome 3)
- Hawkeye: Stargazer Alien Mail Order Brides #9 ( Intergalactic Dating Agency)
- Hawksbill Station
- Hayalet Harekatçı
- Hayu Tales: Point of Origin
- Haywire
- Hazards of Time Travel
- Hazatérés
- Haze
- He Is Risen
- He Who Dares
- He Who Fights and Runs Away (Broken Dark Season One, Episode One)
- He Who Laughs
- He Will Live Up in the Sky
- He/She/They: A Story of Alien Encounter
- Head Case
- Head Space
- Headed Home
- Heading North
- Headless World (Avatar Trilogy Book 2)
- Headlong Flight
- Headstrong Prince
- Heal-X
- Healer's Wedding
- Healing the Alien’s Heart : Scifi Alien Romance
- Healing the Wolf
- Heart and Sol
- Heart and Soulless
- Heart of a Commander
- Heart of a Mercenary
- Heart of a Prince
- Heart of an Assassin
- Heart of an Emperor
- Heart of Ceres
- Heart of Fire Time of Ice
- Heart of Iron
- Heart of the Comet
- Heart of the Hunted
- Heart of the Maelstrom
- Heart of the South
- Heart of the Spider's Web
- Heart of the Valkyrie
- Heart's Prey
- Heart of the Valkyrie
- Heart's Prey
- Heart's Quest
- Heart-Beast
- HeartCrystal
- HeartFast
- Heartless
- Hearts Beat Strong
- Hearts of Peilia : Alien Mail Order Bride Romance
- Heartskein
- HeartStorm
- Heat Death
- Heat Wave 2: The Dinosaur Apocalypse Has Begun
- Heat Wave 3: The Dinosaur Apocalypse Has Begun
- Heat Wave 4: The Dinosaur Apocalypse Has Begun
- Heat Wave 5: The Dinosaur Apocalypse Has Begun
- Heat Wave 6: The Dinosaur Apocalypse Has Begun
- Heat Wave: The Dinosaur Apocalypse Has Begun (A Prequel)
- Heated Match
- Heather The Elementalist: Conspiracy
- Heather The Elementalist: Super Soldier
- Heather The Elementalist: Vengeance
- Heathern
- Heaven at SETI's Doorstep
- Heaven Below
- Heaven on Earth
- Heaven's Fall: Heaven's Shadow 3
- Heaven's Gate
- Heaven's Queen
- Heaven's Reach
- Heaven's Shadow: Heaven's Shadow 1
- Heaven's War: Heaven's Shadow 2
- Heaven, Hell, or Houston
- Heavenly Delusion, Volume 1
- Heavenly Delusion, Volume 2
- Heavy Poodles
- Hedoen: A Wolf's Tale
- Hegemony