Series starting with R
- Rowley Jefferson's Journal
- Rowman & Littlefield Studies in Voice, Gender, and Sexuality
- Rowohlts aktuell
- Rowohlts Monographien
- Roxton Family Saga
- Royal Academy
- Royal Agents
- Royal and Ruthless
- Royal Aspirations
- Royal Babies
- Royal Bastards
- Royal Brides
- Royal Dragon Shifters of Morocco
- Royal Elite
- Royal Historical Society Studies in History New Series
- Royal House of Corinthia
- Royal House of Illyria series
- Royal House of Shadows
- Royal Houses
- Royally
- Royally Forbidden
- Royally Yours
- Royal Ranger
- Royal Replicas
- Royals and Romance
- Royals of Embermere
- Royals Saga
- Royal Trouble
- Roy Grace
- Rubius
- Ruby
- Ruby Blue
- Ruby Finley vs. The Interstellar Invasion
- Ruby Gloom
- Ruby Killingsworth
- Ruby Lodge
- Ruby Oliver
- Ruby Prairie
- Ruby Redfort
- Ruby Ridge
- Ruby Vaughn
- Rubyville A Place to Call Home
- Ruby vs.
- Rudi
- Rudolph the Red-Nosed Reindeer
- Ruffen
- Rufus
- Rugby
- Rugrats
- Ruin
- Ruined
- Ruinous Love
- Ruinous Love Dark Romance
- Ruins
- Ruins of Azlant
- Rule Breaker
- Rules for Life
- Rules for Life (Kitty Flanagan)
- Rules for the Reckless
- Rules of Civility
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