The following gallery contains all of the major deaths in the books and show. It also includes some of the minor ones you forgot about. The first few deaths occur during the events that lead up to the show book.Season 4 spoilers will be at the very bottom and you will be thoroughly warned.
41. Joffery Baratheon - Poisoned by the Lady Olenna at his wedding feast. "He's choking," Queen Margaery gasped. Her grandmother moved to her side. "Help the poor boy!" the Queen of Thorns screeched, in a voice ten times her size. "Dolts! Will you all stand about gaping? Help your king!"