- Unwritable
- Unwritten Rules
- Unzip the Adolescent Chick
- Un’estate in rifugio
- Un’estate senza precedenti
- Un’impresa da eroi (Libro #1 in l’anello dello stregone)
- Un’impresa Da Eroi: Il Romanzo A Fumetti (Episodio 1)
- Un’Mei
- Uomini strade impronte
- Uomini! e italiani ogni giorno
- Uomo in fuga
- Uomo Infinito
- Up a Creek
- Up a Crooked River
- Up a Hill, Down a Hill
- Up Above and Down Below
- Up Above and the Runaway
- Up and Down the Scratchy Mountains
- Up and Down; Day and Night: Opposites for Kids - Baby & Toddler Opposites Books
- Up Close With Spiders
- Up Country
- Up for the Cup
- Up from Jericho Tel
- Up From Slavery
- Up From Slavery: An Autobiography
- Up From the Sea
- Up High
- Up In Arms
- Up in Flames
- Up In Oolapakato
- Up In the Clouds
- Up in the Clouds
- Up in the Clouds; or, Balloon Voyages
- Up In The Sky
- Up on the Housetop
- Up Over Down Under
- Up The Baltic
- Up the Baltic or Young America in Norway, Sweden, and Denmark
- Up the Creek
- Up the Hill
- Up the River
- Up the River or Yachting on the Mississippi
- Up the River or, Yachting on the Mississippi
- Up the Tree House
- Up to Bat
- Up To Me
- Up to Miracles
- Up to This Pointe
- Up to Us
- Up to You
- Up Up and Away With Inspector K
- Up Went the Goat
- Up!
- Up, Up, Up, and Down, Down, Down-y
- Upchuck and the Rotten Willy
- Upcycled Gifts and Gadgets
- Update on Crime
- Upgrade
- Upheaval
- Upiorny dom
- Uploaded
- Upon Angel's Wings
- Upon Broken Wings
- Upp i sadeln igen!
- Uppdrag från kriminalen
- Uppdraget
- Uppercut
- Uppror
- Uppvaknandet
- Upragniona (Część 10 Dzienników Wampirów)
- Upragniony, upragniona
- Uprising of the Pencils: Revised Edition
- Uprooted
- Uprooted: A New Life in the Arizona Sun
- Uprowadzone
- UPS! Barnevaktbyrå
- Upsetting Annie
- Upside Downside Up
- Upside-Down Magic (Upside-Down Magic #1)
- Upstander
- Upstream
- Upsy Downsy Bella Ballerina
- UPÍŘÍ KRONIKA – Cesta do minulosti
- UPÍŘÍ KRONIKA – Prokletí upírů
- UR 2306
- Ur askan
- Ur askan av Gallus
- Uragano
- Uranus: Planets in Our Solar System Children's Astronomy Edition
- URAR: Novela (Hrvatsko Izdanje)
- Urar: novela (Slovenska izdaja)
- Urban Empire Game Guide
- Urban Hunters Box Set (Books 1-8)
- Urban Hunters Collection Books 1 to 3
- Urban Insanity
- Urban Jungle - La prima stagione completa
- Urban Insanity
- Urban Jungle - La prima stagione completa
- Urban Jungle: Corteggiamento
- Urban Jungle: Evasione
- Urban Jungle: L'anello mancante
- Urban Jungle: L'isola
- Urban Jungle: L'uomo scimmia
- Urban Jungle: La sfida
- Urban Jungle: Sopravvivenza
- Urban Legend
- Urban Legend: Orphan
- Urban Legends
- Urban Legends (An Eve Hathaway's Paranormal Mystery Collection Part 1)
- Urban Legends: An Eve Hathaway's Paranormal Mystery Collection Part 2
- Urban Legends: An Eve Hathaway's Paranormal Mystery Collection Part 3
- Urban Legends: An Eve Hathaway's Paranormal Mystery Collection Part 4
- Urban Legendz Vol.1
- Urban Lullabies
- Urban Majix
- Urban Outlaws - Οι ανίκητοι πέντε
- Urban Physical Education
- Urban, Suburban and Rural Regions in the USA American Culture for Kids - Communities Edition 3rd G...
- Urdu: An Essential Grammar
- Urfin şi soldaţii săi de lemn
- Urfus to the Rescue
- Urges for Odds
- Urgle
- Urials krone
- Uriel's Absolution
- Uriel's Gift
- Uriel's Lariat
- Uriel: The Inheritance
- Uriel: The Price
- Uriell, Princesse Motarde - Tome 1
- Urlaub mit Gegenwind
- Urmageren: en novelle (Dansk udgave)
- Urmakaren: en novellett (Svenska utgåvan)
- Urmakeren: en novella (Norsk utgave)
- Uroczysko
- Uropas Sicht der Dinge
- Urpukas
- Urs der Zauberbär
- Ursa
- Ursels Backfischzeit
- Ursibel - Tome 1 : Fils de la grande ourse
- Ursos polares depois da hora de dormir
- URSULA DRENCK