The Thriller Bark Saga (スリラーバーク編 Surirā Bāku Hen?) is the fifth saga in the manga and anime, One Piece. It follows the Straw Hat Pirates, namely Monkey D. Luffy, after their departure from Water 7.
The Straw Hat Pirates travel to the ghost island of Thriller Bark, where they encounter the Shichibukai Gecko Moria. Using his Devil Fruit abilities and the surgical skills of his subordinate, Dr. Hogback, Moria uses Luffy's shadow to revive a legendary giant, Oars. With the help of a skeleton named Brook the Straw Hats fight and defeat Moria and Oars. Brook also reveals himself to be the former captain of the Rumbar Pirates and longtime friend of Laboon, a whale who the Straw Hats met at Reverse Mountain. After Moria's defeat, Brook joins the Straw Hat Pirates as their musician.
- Thriller Bark Saga is the shortest saga in the manga yet, running through only 5 volumes and 48 chapters. It is also the only saga with one arc.