- A, B, C: Three Short Novels
- A.I.
- 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. 07 : Absinthium
- A.N.G.E. 08 : Periculum
- A.N.G.E. 09 : Cenotaphium
- A.N.G.E. 10 : Obscuritas
- Aaron - First Watcher - The Grith
- AB ORIGINE
- Abaddon
- Abaddon's Gate. La fuga
- Abandoned
- Abandoned in Time
- Abandoned On Earth
- Abandoned Time Travel
- Abandonment of Stars
- Abba Nila'ni
- Abbadon
- Abducted
- Abducted by the Alien Dragon
- Abducted by the Alien Warrior
- Abduction
- Abdução: relatório da terceira órbita
- Abeilles commando
- Abeilles road
- Abenteuer Science Fiction: Das Festival von Tasner
- Aberrated
- Abfallverwertungsfabriken für Afrika
- Abflug von Genellan
- Abgekapselt
- Ability
- Ability - I
- Abimagique
- ABLE
- Able One
- Aboard the Universe
- About Those Probes...
- About Time
- Above the Ether
- Above The Line
- Above the Timberline
- Abrakadabra - Storia dell'avvenire
- Abrama's End Game
- Abrama's End Game
- Abraxis Code
- Absence of Blade
- Absence of Mind
- Absolute Zero
- Abstraktor
- Absturz des Phoenix - Chronik der Sternenkrieger #32
- Absurditerre
- Abysm (Aurora Renegades Book Three)
- Abyss
- Abyss Deep
- Abysses
- Acacia Crescent
- Acadia Event
- Acadie
- Accelerando
- Accept
- Accepting the Lance
- Acciaio
- Accident: A paranormal space opera
- Accidental Creatures
- Accidental Death
- Accidental Thoughts
- Accidental Truth
- Accidents in Time
- According To Plan
- Accounting for Evil
- Accouplée aux Cyborgs
- Accouplée aux guerriers
- Accouplée aux Vikens
- Accouplée à la bête
- Accretion
- Ace
- Ace Carroway Around the World
- Ace Hawkins and the Wrath of Santa Claus
- Ace of Spiders
- Ace Slamm
- Aces and Eights
- Aces Over Queen
- Aches (Estrange Reality, #1) (English Edition)
- Achilles Maestri and the Veiled Prince
- 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 Universe
- Across the Universe - The Trilogy
- 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
- ACyBo
- Ad Astra
- Ad Astra - Into the Fastness of Space
- AD FINEM
- Ad Libitum
- Ada Nish Pura
- Adam
- Adam Exiled
- Adam Exitus
- Adam Link, Robot
- Adam Online 3: Чужая реальность
- Adam Quirk #1: The Master Must Die
- Adam Zed
- Adam, Be A Star and The Claustrophobia Of Loneliness (Double Issue)
- 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
- Address: Centauri
- Adel verpflichtet - Der Agent der Krone
- Adele and the Makers
- Adept
- Aderes
- Adhelion 10: Labyrinth