- Una última parada
- Unafraid
- Unafraid; Leon's Son
- Unbegrenzter Sex
- Unbirthday
- Unblemished
- UnBlessed
- Unblinking
- UnBound
- Unbound: A Novel in Verse
- Unbound: Stories of Transformation, Love, and Monsters
- Unbreakable Darkness
- Unbreakable Friendships
- Unbroken
- Unbroken (A Short Story)
- Unbroken in Time
- Unbroken: A Ruined Novel
- Uncaged
- Uncaged (The Singular Menace, 1)
- Uncanny
- Uncanny Tales
- Uncertain Future
- Uncertainty (Gravity series, 2)
- Unchained
- Unchanged
- Unchosen
- Unchosen Mage
- Uncia or Precious Nothing (Illustrated)
- Uncivil Acts
- Unclaimed Baggage
- Unclaimed Blood Vampire Fantasy Thriller
- Unclaimed Heart
- Unclaimed Treasures
- Uncle
- UNCLE ABNER, MASTER OF MYSTERIES (18 Detective Tales in One Volume)
- Uncle Abner, Master of Mysteries: 18 Detective Tales in One Volume
- Uncle Allen's Tales, Second Edition
- Uncle Daddy
- Uncle Daney's Way
- Uncle Gobb and the Plot Plot
- Uncle Grandpa #3
- Uncle Gustav's Ghosts
- Uncle Jarmin's Cheesecake Adventure!
- Uncle Jeff’S Fairy Tale Storybook for Good Little Kiddies, Etc.
- Uncle Jesus
- Uncle Josh's Pit
- Uncle Joshua and the Grooglemen
- Uncle Montague's Tales of Terror
- Uncle Remus and Brer Rabbit
- Uncle Remus in Rhythm and Rhyme
- Uncle Remus, his songs and his sayings
- Uncle Remus: His Songs and His Sayings
- Uncle Robert's Geography (Uncle Robert's Visit, V.3)
- Uncle Ronald
- Uncle Rutherford's Nieces
- Uncle Rutherford's Nieces: A Story for Girls
- Uncle Sam's Boys as Lieutenants
- Uncle Sam's Boys as Lieutenants or Serving Old Glory as Line Officers
- Uncle Sam's Boys as Lieutenants or, Serving Old Glory as Line Officers
- Uncle Sam's Boys as Sergeants
- Uncle Sam's Boys As Sergeants
- Uncle Sam's Boys as Sergeants or Handling Their First Real Commands
- Uncle Sam's Boys in the Philippines
- Uncle Sam's Boys in the Ranks
- Uncle Sam's Boys in the Ranks or Two Recruits in the United States Army
- Uncle Sam's Boys In the Ranks or, Two Recruits In the United States Army
- Uncle Sam's Boys with Pershing's Troops
- Uncle Sam's Boys With Pershing's Troops or Dick Prescott at Grips With the Boche
- Uncle Silas
- Uncle Titus and His Visit to the Country
- Uncle Tom's Cabin
- Uncle Tom's Cabin (Illustrated)
- Uncle Tom's Cabin; Or, Life Among the Lowly
- Uncle Tom’s Cabin
- Uncle Utley and the Return of the Unicorn
- Uncle Utley At the Fair
- Uncle Utley's Ugly Underwear - U Focused Story
- Uncle Vampire
- Uncle Wiggily and Old Mother Hubbard
- Uncle Wiggily and The Pirates
- Uncle Wiggily in the Woods
- Uncle Wiggily's Adventures
- Uncle Wiggily's Automobile
- Uncle Wiggily's Story Book
- Uncle Wiggily's Travels
- Uncle Wiggly in the Woods
- Unclouded Day
- Uncomfortable Conversations with a Black Boy
- Unconditional
- Unconditional Love
- Unconditional
- Unconditional Love
- Uncontrollable
- Unconventional Warfare (Special Forces, Book 1)
- Uncover
- Uncover - Die Trollfabrik
- Uncovered
- Uncovering the Mysterious Woolly Mammoth
- Uncrashable Dakota
- Und auch so bitterkalt
- Und dann kam Juli
- Und dann kam Kuschel....
- Und dann kamst du
- Und der Ozean war unser Himmel
- Und die Menschen blieben zu Hause
- Und er steht doch auf dich
- Und Gewissheit wirst du haben
- Und ich hab dich doch vermisst
- Und im Fenster der Himmel Eine wahre Geschichte
- Und mittendrin ich
- Und morgen am Meer
- Und nebenbei noch Abitur
- Und nun erzählt die Eule Floriana: Jahreszeiten, ihre Zeichen
- Und plötzlich klopft mein Herz
- Und tschüss!
- Und wen der Teufel nicht peinigt ...
- Und wenn die Welt verbrennt
- Und wenn es kein Morgen gibt
- Und wenn schon!
- Und wer nur Gott zum Freunde hat, dem hilft er immer wieder
- Und wer rettet mich?
- Und wie geht es mit meinem Leben weiter?
- Und wieder Winter
- Undan för Knatten!
- Undaunted (Inhuman, Book 2)
- Undead Ed
- Undead Ed and the Demon Freakshow
- Undead Ed and the Fingers of Doom
- Undead Girl Gang
- Undead with Benefits
- Undead Worlds
- Undead Worlds 2
- Undefeated: Jim Thorpe and the Carlisle Indian School Football Team
- Undefined