| Books in this series: |
| 1 | The Lightning Thief | 2005 | 2 | The Sea of Monsters | 2006 | 3 | The Titan's Curse | 2007 | 4 | The Battle of the Labyrinth | 2008 | 5 | The Last Olympian | 2009 | 6 | The Chalice of the Gods | 2023 | 7 | Wrath of the Triple Goddess | 2024 | + | The Demigod Files | 2009 | + | Percy Jackson and the Olympians: The Ultimate Guide | 2008 | + | Percy Jackson and the Sword of Hades + Horrible Histories: Groovy Greeks | 2009 |