Rick Riordan has written a LOT of books on Percy Jackson since the release of The Lightning Thief in 2005.
What started as stories for his then-preteen son, Rick has managed to turn Percy Jackson into a runaway success where his adventures have become as iconic as the Greek heroes themselves. With so many books, it's best to sort out where each book sits in the ever-expanding timeline.
Before we begin this mammoth task, thank you to the Riordan Fandom site, which has an entire timeline page dedicated to this topic.
The way this will work is that we will cite where the story came from if it is a short story and we'll give a larger explanation for ebooks. The books that have hyperlinks are anthology books or reference books
Pre-Percy Jackson
Stories that take place before The Lightning Thief, include the following:
- My Life as a Child Outlaw - a short story written by Rick Riordan for the anthology book, The Cursed Carnival and Other Calamities
- Diary of Luke Castellan - diary entries from Luke Castellan which were included in the reference book, The Demigod Diaries
The First Three Years
The books and stories that lead up to Titan's Curse include:
- PJO bk 1: The Lightning Thief
- PJO bk 2: Sea of Monsters
- PJO bk 3: Titan's Curse
- Percy Jackson and the Stolen Chariot - a short story that was featured in The Demigod Files
Before The Era Of The Prophecy Of Seven
- PJO bk 4: The Battle of the Labyrinth
- Percy Jackson and the Sword of Hades - a short story set after The Battle of the Labyrinth that features in the Demigod Files
- Percy Jackson and the Bronze Dragon - a short story set after The Battle of the Labyrinth that features in the Demigod Files
- PJO bk 5: The Last Olympian
- Percy Jackson and the Singer of Apollo - a short story featured in the book, Guys Read: Other Worlds.
- Percy Jackson and the Staff of Hermes - a short story
- Percy Jackson's Greek Gods - an in-universe guide to the Greek gods
During The Prophecy of Seven
- HOO bk 1: The Lost Hero
- The Red Pyramid - The first Kane Chronicles book
- Leo Valdez and the Quest for Buford - a short story found in The Demigod Diaries
- Son of Magic - a short story found in The Demigod Diaries - written by Haley Riordan, Rick's son
- The Throne of Fire - the second Kane Chronicles book
- HOO bk 2: The Son of Neptune
- HOO bk 3: The Mark of Athena -*gasp* *sad face on verge of crying*
- HOO bk 4: The House of Hades
- HOO bk 5: The Blood of Olympus
Crossing Over The Egyptian Magicians
- The Serpent's Shadow - the final (and third) Kane Chronicles book
- The Son of Sobek - ebook - first crossover fic with the Kane Chronicles
- The Staff of Serapis - ebook - the second crossover fic with the Kane Chronicles
- The Crown of Ptolemy - ebook - the third and final crossover fic with the Kane Chronicles
The New Trilogy Of PJO Books, Magnus Chase, Trials Of Apollo And Nico Adventure
- The Chalice of the Gods - Percy Jackson and the Olympians book 6
- Wrath of the Triple Goddess - Percy Jackson and the Olympians book 7
- Percy Jackson's Greek Heroes - a somewhat sequel
- The Sword of Summer/The Hidden Oracle - The Sword of Summer is the first book in the Magnus Chase series and The Hidden Oracle is the first Trials of Apollo book - both stories are happening at the same time.
- The Camp-Blood Confidential
- Brooklyn House Magical Manual
- Camp Jupiter Classified: A Probatio's Journal
- Hotel Valhalla Guide to the Norse Worlds
- The Dark Prophecy/Hammer of Thor
- The Burning Maze
- The Tyrant's Tomb
- The Ship of the Dead/The Tower of Nero
- The Sun and the Star
- 9 from the Nine Worlds
- Un Natale Mezzosangue
Books Not Referenced In This Timeline
There are two books that are not referenced here as they have not come out yet. The first is the eighth Percy Jackson and the Olympian book, which is supposed to be the sequel to the recently-released Wrath of the Triple Goddess. This alleged third book has not been confirmed yet.
The second book not listed here is the recently announced sequel to The Sun and the Star.