If you liked Harry Potter, try these...
Chima, Cinda Williams
The Demon King: a Seven Realms novel (TEEN PB CHIMA C)
Relates the intertwining fates of former street gang leader Han Alister and headstrong Princess Raisa, as Han takes possession of an amulet that once belonged to an evil wizard and Raisa uncovers a conspiracy in the Grey Wolf Court.
Incarceron (NEW TEEN PB FISHER C)
In Incarceron, a vast intelligent city-prison sealed off from the outside world and hidden from everybody except the Warden, two young people, Cynthia, the Warden's daughter who is trying to esacape an arranged marriage, and Finn, a young prisoner who cannot remember his childhood, join forces to attempt to escape.
The Ruins of Gorlan (TEEN PB FLANAGAN J)
When fifteen-year-old Will is rejected by battleschool, he becomes the reluctant apprentice to the mysterious Ranger Halt, and winds up protecting the kingdom from danger. Look for all ten books in the series!
Cloaked (TEEN FIC FLINN)
Seventeen-year-old Johnny is approached at his family's struggling shoe repair shop in a Miami, Florida, hotel by Alorian Princess Victoriana, who asks him to find her brother who was turned into a frog.
The Thief Lord (TEEN PB FUNKE C)
Two brothers, having run away from the aunt who plans to adopt the younger one, are sought by a detective hired by their aunt, but they have found shelter with--and protection from--Venice's "Thief Lord." Welcome to the magical world of Venice, Italy, where hidden canals and crumbling rooftops shelter runaways and children with incredible secrets.
Beautiful Creatures (NEW TEEN PB GARCIA K)
In a small South Carolina town, where it seems little has changed since the Civil War, sixteen-year-old Ethan is powerfully drawn to Lena, a new classmate with whom he shares a psychic connection and whose family hides a dark secret that may be revealed on her sixteenth birthday. Look for Book #2 Beautiful Darkness and Book #3 Beautiful Chaos.
George, Jessica Day
Sun and Moon, Ice and Snow (TEEN FIC GEORGE J)
A girl travels east of the sun and west of the moon to free her beloved prince from a magic spell.
The Faerie Path (TEEN PB JONES F)
Anita, an ordinary sixteen-year-old girl, is transported from modern-day London to the realm of Faerie where she discovers that she is Princess Tania, the long-lost daughter of King Oberon and Queen Titania. Look for all six books in the series!
Levine, Gail Carson
Fairest (TEEN PB LEVINE G)
In a land where beauty and singing are valued above all else, Aza eventually comes to reconcile her unconventional appearance and her magical voice, and learns to accept herself for who she truly is.
Eragon (TEEN PB PAOLINI C)
In Aagaesia, a fifteen-year-old boy of unknown lineage called Eragon finds a mysterious stone that weaves his life into an intricate tapestry of destiny, magic, and power, peopled with dragons, elves, and monsters. Look for Book #2 Eldest, Book #3 Brisingr, and Book #4 Inheritance.
The Alchemyst : the Secrets of the Immortal Nicholas Flamel (TEEN PB SCOTT M)
While working at pleasant but mundane summer jobs in San Francisco, fifteen-year-old twins, Sophie and Josh, suddenly find themselves caught up in the deadly, centuries-old struggle between rival alchemists, Nicholas Flamel and John Dee, over the possession of an ancient and powerful book holding the secret formulas for alchemy and everlasting life. Look for all six books in this exciting series!
The Amulet of Samarkand (TEEN PB STROUD J)
Nathaniel, a magician's apprentice, summons up the djinn, Bartimaeus and instructs him to steal the Amulet of Samarkand from the powerful magician Simon Lovelace. Look for Book #2 The Golem’s Eye, Book #3 Ptolemy’s Gate, and Book #4 The Ring of Solomon.
The New Policeman (TEEN PB THOMPSON K)
Irish teenager JJ Liddy discovers that time is leaking from his world into Tir na nOg, the land of the fairies, and when he attempts to stop the leak he finds out a lot about his family history, the music that he loves, and a crime his great-grandfather may or may not have committed.