- Arcane Gateway
- Archaea
- Archaikon
- Archangel Down
- Archangel Project
- Archangels
- Archform: Beauty
- Archibald Leach und die Monstrositäten des Marquis de Mortemarte
- Archibald Malmaison
- Archimedes' Claw
- Architects of Infinity
- Architects of Memory
- Archivist Wasp
- Archon Than: Episode 1
- Arctic Smoke
- Arcturus Times Three
- Arde el Trópico
- Ardneh's Sword
- Are There Heroes In Hell?
- Are We Monsters
- Are You HAPP(y)? We Can Help.
- Area 5
- Area 51 Sex Storm #1 Her First Earth Man
- Area 52
- Arecibo
- Arena Tres (Libro #3 en la Trilogía de Supervivencia)
- Arena Uno: Tratantes de Esclavos
- Ares
- Aretha
- Argosy All-Story Weekly Super Pack
- Arguing the Basics
- ARIA Science Fiction & Fantasy Firsts Boxed Set Vol. 1
- Arial's Triumph
- Ariana: A Solaris Station Story
- Arianrhod
- Arianrhod's War
- Aries: A Sci-Fi Alien Romance
- Ariki
- Arissa's Fate
- Aristocrats and Artillery
- Aristoi
- Aristoi - Prima parte (Urania)
- Ark
- Ark of the Apocalypse
- Ark Royal (Star Crusades: War Stories Book 1)
- Arkad's World
- Arkadian Skies
- Arkaïos
- Arkitekterna
- Arkon 10: Hüter der Gedanken
- Arkon 11: Auf dem Wandelstern
- Arkon 12: Kampf um Arkon
- Arkon 1: Der Impuls
- Arkon 2: Aufstand in Thantur-Lok
- Arkon 3: Die Kristallzwillinge
- Arkon 4: Palast der Gedanken
- Arkon 5: Der Smiler und der Hund
- Arkon 6: Unternehmen Archetz
- Arkon 7: Welt der Mediker
- Arkon 8: Die Stunde des Smilers
- Arkon 9: Flotte der Verräter
- Arkon Paket Bände 1 – 12
- ARkStorm Surviving A Flood Of Biblical Proportions
- Arkstream
- Arma Infero 4
- Armada (The Guardian War Book 3)
- Armadeggon, 1970
- Armageddon 2419
- Armageddon 2419 A.D
- Armageddon 2419 AD
- Armageddon Arising
- Armageddon Protocol
- Armageddon TV
- Armageddon Yellowstone: Hell Unleashed
- Armageddon Z (Stone Soldiers #6)
- Armageddon's Arrow
- Armageddon's Children
- Armageddon, 1970
- Armageddon: Osguards: Guardians of the Universe
- Armas de Marte
- Armed Reconnaissance
- Arminium
- Armlet
- Armored Hearts
- Armored Piercing
- Armored Souls: the Complete Collection
- Armour
- ARMS War for Eden
- Armstrong Station
- Armth
- Army of Souls (Scat's Universe Book 2)
- Arnesto Modesto: The World's Most Ineffectual Time Traveler
- Aron Lubor und der Wächter des Ewigen: Weg in die Galaxis
- Around the Moon
- Around the World in 80 days
- Around the World in Eighty Days
- Around the World in more than 80 SF stories
- Array 2781
- Arrested in Peace
- Arrival
- Arrival (Stories of Your Life MTI)
- Arrival (The Invasion Chronicles—Book Two): A Science Fiction Thriller
- Arrival: Titan
- Arrivée (Les Chroniques de l'Invasion, Tome Deux)
- Arte
- Arteess: Conflict
- Artefact 299
- Artefakt