- Red and Priceless
- Red and the Wolf: A Sci-Fi Romance Fairy Tale
- Red Bush
- Red Claw
- Red Death
- Red Dreams
- Red Dust
- Red Dwarf
- Red Dwarf Boxed Set
- Red Dwarf Bundle
- Red Dwarf II
- Red Dwarf III
- Red Dwarf IV
- Red Elvis
- Red Energy. The Alex Cave Series Book 3
- Red Eyes at Night
- Red Flood
- Red Gambit
- Red Gem of Mercury
- Red Harvest: Star Wars
- Red Horizon
- Red Legacy
- Red Limit Freeway
- Red Man, White Land
- Red Mars
- Red Men of Mars
- Red Nails
- Red Notes
- Red One
- Red Plague
- Red Planet
- Red Planet Strippers
- Red Plus Zone
- Red Psychedelia
- Red Ridge
- Red Rising
- Red Rising - Asche zu Asche
- Red Rising - Das Dunkle Zeitalter Teil 1
- Red Rising - Das Dunkle Zeitalter Teil 2
- Red Rising - Im Haus der Feinde
- Red Rising - Tag der Entscheidung
- Red Rock
- Red Roots
- Red Shift Tours
- Red Star Sheriff Volume One
- Red Star Tales
- Red Star Tales
- Red Sun of Darkover
- Red Thru Black
- Red Thunder
- Red Tide
- Red Vengeance
- Red Warp
- Red Witch of Mercury and two more stories
- Red Wrath
- Red#1: Burning Skies
- Redacted #823
- REDD: Down the Rabbit Hole
- Redeemed
- Redeemer of The Hunter
- Redeeming Jacob Marley
- Redemption
- Redemption Ark
- Redemption Protocol
- Redemption Song
- Redenzione la stirpe reale
- Rediscovery
- Redline Rebels
- Redshift Rendezvous
- Redshifted: Martian Stories
- Redzone
- Reefsong
- Reeves Indeed!
- Reflection Infection
- Reflections
- Reflections of Destiny
- Reflections on the Decline of Science in England
- Reformation - Part 2
- Reformation - Part 3
- Reformation Part 1
- Reformed
- Refracted to the Stars
- Refugee
- Refugee Star Trail
- Regarde-moi dans les yeux
- Regarding Avalon
- Regardless of the Consequences
- Rege's Rescue
- Regeneratione. GRAVITON & GURGES 2.0
- Regeneratione: Gurges 2.0
- Reggie vs. Kaiju Storm Chimera Wolf
- Region Zero
- Regression
- Regret
- Regret and Retribution
- Rehab
- Rehab 3000
- Rehabilitation
- Rehan
- Reichardt
- Reign & Revolution
- Reign of Monsters
- Reign of Resurgence: Checkmate (Kingdom of Destiny Book 5)
- Reign of Resurgence: The Advantage (Kingdom of Destiny Book 1)
- Reign of Resurgence: The Edge (Kingdom of Destiny Book 2)
- Reign of Resurgence: The Ruse (Kingdom of Destiny Book 4)
- Reign of Resurgence: The Squeeze (Kingdom of Destiny Book 3)
- Reign of the Devourer
- Reilly und Sunfrost: Chronik der Sternenkrieger 8 Romane
- ReImagination
- Reimagining Lovecraft: Four Tor.com Novellas
- Reining Cats and Dogs
- Reinkarnation
- Reis de todos os mundos possíveis
- Reise durch die Sonnenwelt
- Reise durch die Sonnenwelt: Science-Fiction-Klassiker
- Reise in die Anderswelt: Zwei All Age Fantasy Abenteuer: Cassiopeiapress Junior
- Reise ins Ungewisse
- Reise nach dem Mittelpunkt der Erde
- Reise nach dem Mittelpunkt der Erde (Phoenix Classics)
- Reise ohne Wiederkehr
- Reise um den Mond
- Reise um die Erde in 80 Tagen
- Reise zum Mittelpunkt der Erde
- Rejected Messages
- Rejoins-moi
- Rejsen til Neuschwabenland
- Rekhmire: Enemy of the Gods
- Relapsed
- Relative Space
- Relativity (Aurora Resonant Book One)
- Relativity: Stories and Essays
- Relaunch Mission
- Release the Magic
- Released
- Relentless Target