Gangstar Vegas is an open world action-adventure video game developed by Gameloft Montreal and published by Gameloft. It was released for Android and iOS (iPhone, iPod Touch and iPad) on June 7, 2013. It is the sixth (seventh counting Gangstar City) installment in the Gangstar series; it is preceded by Gangstar Rio: City of Saints and succeeded by Gangstar: New Orleans.

Gangstar Vegas is set in modern-day Las Vegas, Nevada. The story revolves around Jason Malone, a skilled mixed martial arts fighter who is targeted by Frank Veliano after winning in a match. Like games in the Grand Theft Auto series, Gangstar Vegas has elements of driving games and third-person shooters, and features "open-world" gameplay that gives the player more control over their playing experience.

Upon its release, it received mixed reviews from critics and players alike, who criticized the laggy graphics, animation, and the frequent software updates, but praised the music and the extensive use of three-dimensional (3D) graphics, which some players noted as an improvement over the previous main installment's 3D version. It has also been a commercial success, having been downloaded over 100 million times on Android and iOS.