Need for Speed: Underground 2 is a 2004 racing video game developed by EA Black Box and published by Electronic Arts. It is the eighth installment in the Need for Speed series and the direct sequel to Need for Speed: Underground. It was developed for Microsoft Windows, GameCube, PlayStation 2, and Xbox. Game Boy Advance and Nintendo DS versions were developed by Pocketeers, and a PlayStation Portable version, titled Need for Speed: Underground Rivals, was developed by Team Fusion. Another version for mobile phones was also developed. Like its predecessor, it was also commercially successful, selling around 11 million copies worldwide and breaking sales records in the United Kingdom.

The game entails tuning cars for street races, resuming the Need for Speed: Underground storyline. Need for Speed: Underground 2 provides several new features, such as broader customization, new methods of selecting races, set in a city known as Bayview. Brooke Burke is the voice of Rachel Teller, the person who guides the player throughout the game. The game's storyline is presented in a comic book strip. The Nintendo DS port introduces a new feature in which the player can design custom decals to adorn any vehicle in the game.