- Una violeta de más
- Una vita da... ovvero: le procellarie di Andrea
- Una volpe nel deserto
- Una volta ho toccato il cielo
- Una última oportunidad
- Una's World
- Unable To Say Goodbye
- Unaccompanied Sonata and Other Stories
- Unaccomplished
- Unafraid
- Unalome
- Unalterable Peril
- Unaltered
- Unantastbar
- Unas Navidades Fuera De Lo Normal
- Unavoidable Fates
- Unawakened
- Unawares
- Unbaked Croakies
- Unbalanced Party: Fool Me Cockatrice
- Unbalanced Party: It's a Trap!
- Unbalanced Party: Please Don't Feed the Trolls
- Unbearable Desires
- UnBearable SEAL (Bear Shifter Navy SEAL Romance)
- Unbeaten
- Unbeherrscht
- Unbekannte Raumzeit: Das Science Fiction Abenteuer Paket auf 1200 Seiten
- Unbekannte Zone
- Unbeknownst II: Time Travel to Mid-Nineteen Century Oregon
- Unbelief Trilogy
- Unbelievable: A Novel of the Exotica Chronicles
- Unbeliever - Love is Magic is Love
- Unberührt
- Unbesiegbar
- Unbidden
- Unbinding
- UnBirthday Present
- Unblinking
- Unborn Blood
- Unborn Tomorrow
- Unbound #11 : Twisted Coils
- Unbound and Free
- Unbound Horizons
- Unbound Spirits
- Unbound Witch
- Unbound, A Fallen Novel
- Unbound: A Siren's Quest for Freedom
- Unbound: The Trust that Binds 1
- Unbounded
- Unbounded Series Books 1-3
- Unbreakable
- Unbreakable Bonds
- Unbreaking
- Unbridled Mr. CEO
- Unbroken
- UnBroken
- Unbroken Chain
- Unbroken Chain: The Darker Road
- Unbroken Curse
- Unbroken Familiar
- Unbroken Fire
- Unbroken Kingdom
- Unbroken Light
- Unbroken Truth
- Unbroken Vow
- Unbroken Vows
- Unburning Alexandria
- Uncanny Collateral
- Uncanny Encounters: Roswell
- Uncanny Miscellany
- Uncanny Tales of Crush and Pound 11
- Uncanny Tales of Crush and Pound 12
- Uncanny Tales of Crush and Pound 13
- Uncanny Tales of Crush and Pound 14
- Uncanny Tales of Crush and Pound 15
- Uncanny Tales of Crush and Pound 16
- Uncanny Tales of Crush and Pound 17
- Uncanny Tales of Crush and Pound 18
- Uncanny Tales of Crush and Pound 2
- Uncanny Tales of Crush and Pound 8
- Uncanny Tales of Crush and Pound 9
- Uncanny Tales of Crush and Pound Annual 1
- Uncanny Tales of Crush and Pound Annual 3
- Uncanny Valley
- Unceasing
- Uncertain Murder
- Uncertain Throne
- Uncertainty
- Unchained (Nephilim Rising)
- Unchained by a Forbidden Love
- Unchained Desire
- Unchained Shadows
- Unchanged
- Unchanging
- Uncharted Frontier EZine Issue 11
- Uncharted Frontier EZine Issue 14
- Uncharted Frontier EZine Issue 15
- Uncharted Frontier EZine Issue 8
- Uncharted Passage: Toward New Realms
- Uncharted Stars
- Uncharted Worlds: Xeno Encounters
- Uncharted: Book Seven of The Channel Riders
- Unchosen Destiny
- Uncia or Precious Nothing (Illustrated)
- Uncivil
- Uncivil Service
- Unclaimed
- Unclaimed Blood Vampire Fantasy Thriller
- Uncle & Niece
- Uncle Billy's Chicken Hut and Salvation Emporium
- Uncle Charlie Goes Swimming
- Uncle Charlie's Toy Store
- Uncle Cornelius, His Story
- Uncle Edgar - The Android
- Uncle Edgar - United Space Force
- Uncle Flower's Homecoming Waltz
- Uncle loves his new madam
- Uncle Merl's Bar & Grill
- Uncle PoleCat Goes To Hollywood
- Uncle Remus and Brer Rabbit
- Uncle Remus Stories
- Uncle Remus: His Songs and His Sayings
- Uncle Warlock and the Realm of Fire
- Uncle Wiggily and The Pirates: How the Enemy Craft of Pirate Fox was Sunk
- Uncle Wiggily on The Flying Rug: The Great Adventure on a Windy March Day
- Uncle Wiggily's Automobile
- Uncle Wiggily's Story Book
- Uncle, Please Keep Your Integrity
- Unclean
- Unclean Spirits
- Unclear Skies
- Uncommon
- Uncommon Counsel
- Uncommon Faire: A Fiction Sideshow
- Uncommon Ground