- Ucronie lacustri
- Udgårds Porte
- UFO‑landia
- Ugh-Lomi
- Uhrstafen
- Ulemet and the Jaguar God
- Ultimul Tren Spre Londra
- Um Amor Viking
- Um Deus em Humaitá
- Umfaan's Heroes
- Ummana - Schatten und Licht
- Un Amour Viking
- Un castello nella campagna romana. Leggenda del settimo secolo
- Un Cœur Pur
- Un Dios en Humaitá
- Un elefante a Venezia
- Un Rayo De Sol Entra Por La Ventana
- Un volo nel passato
- Un yanqui en la corte del rey Arturo
- Un été Dans Le Sahara
- Una lunga storia di amore e di commerci
- Una Muy Alegre Confusión: Una Novella Corta Sobre Orgullo y Prejuicio
- Una storia tedesca
- Una venganza insurgente
- Unborn Blood
- Unbound and Free
- Uncertain Throne
- Uncommon Life
- Under
- Under Dirt, Water, and Fire
- Under Lock and Key
- Under the Moon
- Under the Red Dragon: A Novel
- Under the Rose
- Under The Southern Cross
- Under Western Eyes
- Understood Betsy
- Une invasion sans précédent
- Une Princesse Et Un Loup
- Unexplained
- Unfettered
- Unfixed Timelines
- Unforgiven: A Tale of the Possessed
- Unhonored
- Union Forever
- Union of Fire
- Unnatural Magic
- Unquiet Skies
- Unravel the Dusk
- Unremarkable
- Unsafe, Unsound
- Unseen: Chronicles of the Royal Society for Investigation of the Paranormal
- Unsafe, Unsound
- Unseen: Chronicles of the Royal Society for Investigation of the Paranormal
- Untamed
- Untamed Desire
- Unter dem Banner des weißen Hirsches
- Unter dem Licht des Nordsterns
- Unterhalb des Horizonts
- Unthinkable
- Untouchable
- Untruth, Untruth
- Unwept
- Up From Hell
- Up from Slavery; an Unfinished Journey
- Upon a River's Crescent (Volume 3 : The Hurricane Journals)
- Uranie
- Urdaisunia
- Urgus the Scribe
- Urgus Unbound
- Uriaşul îngropat
- Ursa Major, The Great Bear
- Urth
- Usurper
- Uther
- Uther and Igraine
- Uther's Destiny