- UI 101
- Ulvekongen
- Um elefante na sala
- Uma garrafa no mar de Gaza
- Uma história de verão
- Umbra
- Un any fora de casa! (Sèrie New York Academy 1)
- Un beso en tu futuro
- Un buco nel cielo
- Un Canto di Natale - A Christmas Carol (Edizione originale con le splendide illustrazioni di Arthur ...
- Un courant d'air
- Un grosso equivoco
- Un infierno
- Un monstruo viene a verme
- Un Planeta Llamado Ratier/ a Planet Called Thear
- Una casa a la deriva
- Una lista peligrosa
- Una semana de siete lunes
- Una serata come le altre
- Una volta ho toccato il cielo
- Unbelievably Boring Bart
- Unbroken
- Uncle Tom's Cabin (Illustrated)
- Unclouded Day
- Und plötzlich ist später jetzt
- Undead Girl Gang
- Under Copp's Hill
- Under Locker and Key
- Under the Arches
- Under the Bottle Bridge
- Under the Same Sky
- Under the Watsons' Porch
- Undersea, 2, 3 With Buster and Friends. Numbers for Counting
- Undersea, 4, 5 with Buster and Friends. Numbers for Counting
- Undersea, 6, 7 With Buster and Friends. Numbers for Counting
- Une chanteuse à Médine et autres contes arabes
- Unequal
- Unforgettable
- Unfriended
- Unfriendly Competition
- Ungerecht!
- Unintended Rebel
- Uninvited
- Union of Damaron
- Unleashed
- Unlocking the Future's Past: Book One
- Unmasked
- Unraveling Isobel
- Unsettled
- Unshakable Hope Promise Book
- Unsichtbare Wunden
- Unsung Heroes: Risk Takers
- Unter dem Himmel Australiens
- Until I Find Julian
- Until I’m Safe
- Un’Mei
- Up and Down the Scratchy Mountains
- Up from Jericho Tel
- Up on Cloud Nine
- Upgrade U
- Uprooted
- Uprooted: A New Life in the Arizona Sun
- Uptown Dreams
- Urban Hunters Box Set (Books 1-8)
- Us Regular Students
- Used to Be