I cannot get enough of Dystopian Fiction. By far my favorite genre. I can't remember all of the Dystopian books that I've read, but here's what I remember.
Gone, Hunger, Lies, Plague, Fear, Light - Series by Michael Grant
Divergent, Insurgent, Allegiant - Series by Veronica Roth
Legend, Prodigy, Champion - Series by Marie Lu
Hunger Games, Catching Fire, Mockingjay - Series by Suzanne Collins
1984 - By George Orwell
Lord of the Flies - By William Golding
Brave New World - By Aldous Huxley [Really Creepy Book]
I feel like my list is so short ;(
This is just what I remember reading in terms of Dystopia. I highly highly highly recommend the Gone Series. Just finished it, and absolutely loved it.