Sly Cooper and the Thievius Raccoonus (known as Sly Raccoon in PAL regions) is a stealth platform video game developed by Sucker Punch Productions and published by Sony Computer Entertainment for the PlayStation 2. It is the first installment in the Sly Cooper series. The game follows the titular Sly Cooper and his gang, Bentley the Turtle and Murray the Hippo, on their mission to recover the lost pages of the "Thievius Raccoonus" (a book listing every thieving technique created by Sly's ancestors) from a rival gang known as the Fiendish Five.

Sly Cooper was praised for its technical achievements—particularly its use of a variation on cel-shading to create a film noir feel while still rendering as a hand-drawn animated film—and criticized for being too short. The game was followed by three sequels: Sly 2: Band of Thieves (2004), Sly 3: Honor Among Thieves (2005), and Sly Cooper: Thieves in Time (2013). The first three games were remastered and released as The Sly Collection for the PlayStation 3 and PlayStation Vita on April 16, 2014. Sly Cooper was digitally re-released on PlayStation 4 and PlayStation 5 on June 11, 2024.