- Una luce per Samarcanda
- Uncle Jacob and His Four Nephews and Nieces
- Uncle Tom's Cabin (Illustrated + FREE audiobook download link)
- Uncle Tom's Cabin + FREE Audiobook Included
- Uncle Wiggily's Story Book
- Und wieder Winter
- Under Hill (Aos Si, #2)
- Under His Own Pillow
- Under the Chilian Flag, A Tale of War Between Chili and Peru
- Under the Lilacs
- Under the Mesquite
- Under the Meteor Flag, Log of a Midshipman During the French Revolutionary War
- Under the Mesquite
- Under the Meteor Flag, Log of a Midshipman During the French Revolutionary War
- Under The North Star
- Une brève histoire d'Ardalia
- Une Question Epineuse
- Unforgettable Sleepover
- Universe By Design
- Unless You Are Silly
- Uno di noi
- Until We Meet Again
- Urban Hunters Collection Books 1 to 3