- Oracle Adored
- Oracle Defiant
- Oracle of Nightmares
- Oracle of Spirits #1 (BBW Werewolf Shifter Romance)
- Oracle of Spirits #2 (BBW Werewolf Shifter Romance)
- Oracle of Spirits #3 (BBW Werewolf Shifter Romance)
- Oracle of Spirits #4 (BBW Werewolf Shifter Romance)
- Oracle of Spirits #5 (BBW Werewolf Shifter Romance)
- Oracle of Spirits #6 (BBW Werewolf Shifter Romance)
- Oracle of Spirits Box Set (BBW Werewolf Shifter Romance)
- Oracle's Moon
- Oracle's Vision
- Oracles' Light [PUP Squad Alpha 8]
- Orasul Semilunii
- Orbital Eclipse: The Second Lunar Lovescape Novel
- Orc In Winter
- Orchid
- Order of Rogrithy Bane (Blue Platoon 7)
- Order of Succession, Royal Duty
- Order of the Blade Boxed Set (Books 1-4)
- Order of the Dragon
- Order-Born
- Oren (Tales from the Island)
- Oren's Right
- Orgie en mer
- Orgoglio E Caduta
- Orgone
- Oria's Enchantment
- Oria’s Gambit
- Orien
- Orient Fevre
- Orientation
- Origin ARS 1
- Origin ARS 3
- Origin ARS 4
- Origin ARS 6
- Origin ARS 7
- Origin Exposed
- Origin of the Vampyre: A Companion to Doctor Polidori's The Vampyre
- Originais
- Original
- Original Grace
- Original Sin
- Originally Human
- Originally Human
- Origine (Tome 1) - Étoile noire
- Origine (Tome 2) - Flamme obscure
- Origine (Tome 3) - Nuit scintillante
- Origins of Dark Angel
- Origins: First Books of Three Paranormal Bestsellers: Cole, Showalter, Kohler
- Orion
- Orion's Order Insider's Guide
- Orlando
- Oroscopo per la Festa 2018. Oroscopo russo
- Orphan Entangled
- Orphans of a Loveless God - Volume I
- Orphans of a Loveless God - Volume II
- Orphans of a Loveless God - Volume III
- Orphans, Wolves & Loving It!
- Orpheus: A Modern Greek Tragedy
- Orrora
- Os Arqueiros do Rio Vermelho
- Os dias em que Rúbia viveu no futuro
- Os diálogos dos amantes
- Os guardiões da luz
- Os Melhores Contos de H .P. Lovecraft - 3º Vol.
- Os Parceiros da Alfa
- Os Refletivos
- Os Rios Inumeráveis
- Oscar and Josephine
- Oscar Scheller
- Oscura seducción
- Oscurità Nascoste
- Ossessione
- Ossessione Alfa
- Ossessioni intime
- Ossessioni nella notte (eLit)
- Ostakis
- Ostrich and the 'Roo
- Other Girl
- Other Men: Five Tales of Erotic Gay Urban Fantasy
- Other Than
- Other Voices, Other Rooms
- Other World Series Books Four to Six
- Other World Series Books One to Three
- Other Worlds
- Othernaturals Book Six: Witches
- Others of Edenton: Series Volume 1
- Others of Edenton: Series Volume 2
- Others of Edenton: Series Volume 3
- Others of Seattle: Series Volume 1
- Others of Seattle: Series Volume 2
- Otherworld Tales Volume 1
- Otherworld Tales: Volume 2
- Otra Vez, Ponovo
- Otranto Şatosu
- Otro Amanecer
- Otter Chaos
- Ou l’histoire d’un Ange impie
- Ouija II. Il riflesso del male
- Our Hearts
- Our Lady's Army
- Our Lady's Nation
- Our Lady's Revelations
- Our Lady's Travels
- Our Lady's War
- Our Mutual Friend
- Our New Hope
- Our New World
- Our Only Hope
- Our Own Spaces
- Our Place In Time
- Our Sacred Balance
- Our Second Chance Life: MM Omegaverse Mpreg Romance
- Our Sexy Tiger [Purrfect Mates 3]
- Our Silent Spirit [Spirit Walkers 6]
- Our Silver Pond
- Our Souls to Keep
- Our Street
- Our Summer of Discontent (The Immortal Ones - Book Three)
- Our Time
- Our Universe: Lesbian and Alien Romance
- Our Uprising: Planet Athion
- Our Violent Ends
- Our World
- Ours (The Bears Book 2)
- Ours de Red Lodge Coffret
- Ours is Just a Little Sorrow
- Ours to Embrace
- Ours to Share