- Rome's Evolution
- Rome's Revolution
- Romy [Book I of the 2250 Saga]
- Ronan: Ziva Payvan Book 3
- Rone Isa
- Ronin
- Ronin (Intergaláctica nº 3) (La Gran Final)
- Rooftop Suitor
- Roog
- ROOK
- Rook Song
- Rookie
- Rooks and Romanticide
- Room 42
- Rooster's Dawn
- Root
- Rory's Rock
- Rosa Cuántica
- Rose Point (Her Instruments Book 2)
- Rosebud
- Roses in Moonlight
- Roseworld
- Rosicrux
- Rosige Aussichten
- Roter Blitz
- Roter Mars
- Roter Mond
- Rotta per Addle
- Rotten Magic
- Rotten Row
- Rotten: Book One - Infection
- Rotville
- Rouge-terre bleu-ciel
- Rough Man Daughters
- Rough Storm 2045
- Rough Wars
- Round the Moon
- Route 54
- Route 666
- Routine for a Hornet
- Roy: The Most Chaotic Midlife Crisis in Cosmic History
- Royal
- Royal Duties
- Royce
- Ruabon
- Rubicon
- Rubicon (Aurora Resonant Book Two)
- Ruby Beyond Compare
- Ruby City
- Rude Awakenings of a Jane Austen Addict
- Rude Baby
- Rudime
- Ruf des Bärenstroms
- Ruido de pasos
- Ruido gris
- Ruin
- Ruin Star
- Ruination-Z: Outbreak - Book 1
- Ruination-Z: Outbreak - Book 2
- Ruination-Z: Outbreak - Book 3
- Ruination-Z: Outbreak - Bundle
- Ruind
- Ruined
- Ruined Kingdom
- Ruined Worlds
- Ruinerne på Sneboldjord
- Ruins & Robots 0: Tutorial
- Ruins - Romok
- Ruins of Fate
- Ruins of the Fall
- Rule Of The Machines
- Rule of Two
- Ruled Out
- Ruler of Naught: Exordium 2
- Rules of Accusation
- Rules of Crane
- Rules of Engagement
- Rules of Redemption
- Rum & Rebellion
- Rumbo a Marte
- Rumors of Salvation
- Rumors of War
- Run Forever
- Run to the Stars
- Run With the Hunted
- Run With the Hunted 2: Ctrl Alt Delete
- Run With the Hunted 3: Standard Operating Procedure
- Run With the Hunted 4: VIP
- Run with the Moon
- Runaway Hearts
- Runaway Skyscraper
- Rune Breaker: The Complete Saga
- Rune Warrior
- Runes Hoffnung
- Runner's Moon: Challa
- Runner's Moon: Simolif
- Runner's Moon: Tiron
- Runner's Moon: Yarrolam
- Running Backward
- Running Before the Storm
- Running from the Deity
- Running Out of Time
- Running Red River
- Running Wild (Book Two)
- Running Wolf (Cryptofiction Classics - Weird Tales of Strange Creatures)
- Running: The Alien in the Mirror
- Runs in the Family
- Runt
- Runtime
- Runtime - A Chameleon Moon Short Story
- Rupert Space Ranger: Episodes 1-5
- RUR : Rossum's Universal Robots
- Rusets flyktighet
- Russischer Frühling
- Rust Bucket: Book1, the Rust Bucket Universe Series
- Rust, Gore, and the Junkyard Zombie
- Rusted Lies, a Dalton Rust P.I. Novel
- Ruth Longknife's First Christmas
- Ruthless
- Ruthless Game
- Ruthless King: A Dark Fated-Mates Romance
- Ruud van Houten und der Hexenkessel
- Rycerz Siedmiu Królestw