Rowling, J. K.

Harry Potter readalikes with adult appeal, featuring themes of good versus evil, finding one's place in the universe and a cast of witches, wizards, warlocks, trolls and dragons.

Brooks, Terry - Heritage of Shannara series 
Brooks, Terry - Shannara series 
Brooks, Terry - Word and void series 

Clarke, Susanna - Jonathan Strange and Mr. Norrell

Donaldson, Stephen - The Chronicles of Thomas Covenant the unbeliever 

Duane, Diane - So you want to be a wizard 

Eddings, David - Belgariad series 
Eddings, David - Mallorean saga 
Eddings, David - Tamuli series 

Ende, Michael - The Neverending story 

Ibbotson, Eva - The Secret of platform 13 

Jones, Diana Wynne - The Dark Lord of Derkholm 

Jordan, Robert - The Wheel of time series 

Lackey, Mercedes

LeGuin, Ursula - Earthsea series 

Lewis, C. S. - Chronicles of Narnia 

Peake, Mervyn - Gormenghast trilogy 

Pratchett, Terry - Discworld series 

Pullman, Philip - His dark materials series 

Rawn, Melanie

Stewart, Mary - The Crystal cave 

Tolkien, J.R.R. - The Hobbit 
Tolkien, J.R.R. - The Fellowship of the ring 

Williams, Tad - Memory, sorrow and thorn series