- Astra
- Astral Messiah: Mission 6
- Astral Threads
- Astral Tides: Rimward
- Astral Tides: The Shadows of Uhmakhet
- Astras Bewährungsprobe
- Astrid Maxxim and Her High-Rise Air Purifier
- Astrid Maxxim and her Hypersonic Space Plane
- Astrid Maxxim and the Antarctic Expedition
- Astrolux - Tähtien lapset
- AstroTown: Die Zukunft der Menschheit
- AstroTown: O Futuro da Humanidade
- AstroTown: The Future of Humankind
- Asylum
- At First, You Hear The Silence
- At Last/A Futuristic Thriller
- At Swords' Points
- At the Cutting Edge
- At the Earth's Core (Annotated)
- At the Earth's Core, First Novel of the Pellucidar Series
- At the Earth’s Core
- At the End of the Journey
- At the Helm: Volume 2: A Sci-Fi Bridge Anthology
- At the Helm: Volume 3: A Sci-Fi Bridge Anthology
- At the Helm: Volume 4: A Sci-Fi Bridge Anthology
- At the Midway
- At the Mountains of Madness
- AT THE MOUNTAINS OF MADNESS (The Lost World Classic)
- At The Precipice
- At the Sign of Triumph
- At War With Nature
- Atado a la Tierra
- Atamara - La rencontre Livre lesbien, roman lesbien
- ATHANATOI Tiranni della Gioventù
- Athena Merrill and the Midnight Chicken
- Athyra: The First Chapter
- Atlantean
- Atlantidos kodas
- Atlantis
- Atlantis Inbound
- Atlantis Legacy: Volume 1
- Atlantis Returns
- Atlantis Rising
- Atlantis: Battle Against Timpist
- Atlas' Last Stand
- Atmosfear: El Inframundo
- Atmosphere
- Atmospheric Burn
- Atom Boy
- Atom Drive
- Atomic Fireflies
- Atoms for Peace and Other Stories
- Atonement
- A Atração Genética
- Attack From Above
- Attack of the 100 Foot Virgin!
- Attack Of The 50 Foot Fembot
- Attack of the Clones: Star Wars: Episode II
- Attack of the Crawling Hand
- Attack of the Federation
- Attack of the Gorlocks
- Attack of the North Korean Giantess (Triangulum Episode 4)
- Attack Of The Peackeepers
- Attention ils arrivent !
- Attention St. Patrick
- Au 29ème siècle ou La journée d’un journaliste américain – suivi d'annexes
- Au coeur de la Terre (cycle de Pellucidar n° 1)
- Au temps des brumes
- Au-delà du temps
- Audience Reaction
- Audienz bei Quin
- Auf der Spur der Erhabenen: Chronik der Sternenkrieger 41-44 – Sammelband 4 Science Fiction Romane
- Auf der Suche nach den Uldanern (Galaktogon Buch 2) LitRPG-Serie
- Auf Götterpfaden
- Auf zwei Planeten
- Aufstand der Nimmariten
- Augmented Genocide
- Augmented i
- Augurkoek
- August Vanity
- Aunt Tina and the A.I. Squirrels Annual Work Review (Episode Five) Choir Rehearsal (Episode Six)
- Aunt Tina and the A.I. Squirrels First Encounter (Episode One) Lawnmower Incident (Episode Two)
- Aunt Tina and the A.I. Squirrels The Scouts (Episode Three) Pizza Party (Episode Four)
- Aupes
- Auria
- Aurora
- Aurora Blazing
- Aurora Equinox (Salmon Run - Book 6)
- Amaranthe II: Rebellion
- Amaranthe III: Resonance
- Amaranthe I: Rise
- Aurore Lescure Pilote d'Astronef
- AUROS - Ruptura
- Aus der Tiefe
- Aus der Welt gefallen
- Aussichtslos - Chronik der Sternenkrieger #25
- Aussie Mythology
- Autobiography of a Failed Time Traveler
- Automatic Eve
- Automatic Reload
- Automaton
- Automatons for Peace
- Automne
- AUTONOOM
- Autour de la Lune
- Autour de la Lune – suivi d'annexes
- Autumn
- Autumn - Dawn
- Autumn: Aftermath
- Autumn: Disintegration
- Autumn: Purification
- Autumn: The City
- Außer Reichweite - Band 1
- Außer Reichweite - Band 2
- Ava Episode One
- Ava's Revenge
- Available Light
- Avala: Spirit of the Mindscapes
- Avala: Spirits of the Mindscapes
- Avalanche: The Secret World Chronicles