- A, B, C: Three Short Novels
- A-Viking
- A.I. Confidential (Liquid Cool, Book 6)
- A.I. Insurrection Armageddon
- A.M.P.D. Artificial Military Prosthetics Division Part One
- A.N.G.E. 03 : Perfidia
- A.N.G.E. 04 : Sicarius
- A.N.G.E. 05 : Codex Angelicus
- A.N.G.E. 06 : Tribulare
- A.N.G.E. 09 : Cenotaphium
- A.N.G.E. 10 : Obscuritas
- Aaron - First Watcher - The Grith
- AB ORIGINE
- Abaddon
- Abaddon's Gate
- Abaddon's Gate. La fuga
- Abandoned
- Abandoned in Time
- Abandoned On Earth
- Abba Nila'ni
- Abducted by the Alien Dragon
- Abducted By The Fire King
- Abduction
- Abdução: relatório da terceira órbita
- Abeilles commando
- Abeilles road
- Aberrated
- Abfallverwertungsfabriken für Afrika
- Abflug von Genellan
- Ability
- Ability - I
- ABLE
- Able One
- Aboard the Universe
- About Those Probes...
- Above the Ether
- Above the Timberline
- Abrakadabra - Storia dell'avvenire
- Abraxis Code
- Absence of Blade
- Absence of Mind
- Absolute Zero
- Abstraktor
- Absturz des Phoenix - Chronik der Sternenkrieger #32
- Absturz unter Drachenfeuer
- Abysm (Aurora Renegades Book Three)
- Abyss
- Abyss Deep
- Acacia Crescent
- Acacia Crescent
- Accelerando
- Accept
- Acciaio
- Accident temporel
- Accident: A paranormal space opera
- Accidental Creatures
- ACCIDENTAL DEATH
- Accidental Death
- Accidental Thoughts
- According To Plan
- Accounting for Evil
- Accretion
- Ace
- Ace Carroway Around the World
- Ace Hawkins and the Wrath of Santa Claus
- Ace of Spiders
- Ace Slamm
- Ace Tucker Space Trucker
- Ace's Odds
- Aces Over Queen
- Aches (Estrange Reality, #1) (English Edition)
- Achromatopsja
- Acid Air
- Across Continents (Future Earth Chronicles Book 3)
- Across the Dark Horizon
- Across the Great Rift
- Across the Karman Line
- Across the Plains of Angar
- Across The Realm
- Across the Stars
- Across the Stars: Book Three of Seeds of a Fallen Empire
- Across the Stonewind Sky
- Across The Universe
- Across the Void
- Across the Wounded Galaxy
- Across the Zodiac (Sci-Fi Classic)
- Act of God
- Act of Will
- Action Glasses: Level One
- Action Glasses: Level Two
- Activate
- Acts of Contrition
- Acts of Life
- Acts of Vanishing
- Acts of War
- Acupuncture of The Mind
- Ad Astra
- Ad Astra - Into the Fastness of Space
- AD FINEM
- Ad Libitum
- Ada Nish Pura
- Adam
- Adam Exitus
- Adam Link, Robot
- Adam Quirk #1: The Master Must Die
- Adam Zed
- Adamson's Rock and Other Stories
- Adam’s Journey
- Adaptation
- Adattamento
- Addicted (Unearthly Paradox Book 2)
- Addie's Alien
- Addio, e grazie per tutto il pesce
- Addleton Heights
- Adel verpflichtet - Der Agent der Krone
- Adele and the Makers
- Adept
- Aderes
- Adhelion 10: Labyrinth
- Adhelion 11: Rächer
- Adhelion 12: Babylon
- Adhelion 1: Kanalfund
- Adhelion 2: Wachtraum
- Adhelion 3: Relikt
- Adhelion 4: Helos
- Adhelion 5: Gewitterregen
- Adhelion 6: Totenwache
- Adhelion 7: Kaltfront
- Adhelion 8: Verführung
- Adhelion 9: Amor
- Adhelion. Das Todesspiel
- Adhelion. Kalte Sonne
- Adiamante
- Adjustment Team
- Adolescents Only
- Adongiva
- Adopted by Aliens
- Adrian's Eagles Large Print
- Adrift (Starship Perilous Adventure #5)
- Adrift on a Möbius Strip
- Adulthood Rites
- Advance
- Advance Agent
- Advance On Sequetus 3
- Advent