Grand Theft Auto is a series of action-adventure games created by David Jones and Mike Dailly. Later titles were developed under the oversight of brothers Dan and Sam Houser, Leslie Benzies and Aaron Garbut. It is primarily developed by British development house Rockstar North (formerly DMA Design), and published by its American parent company, Rockstar Games. The name of the series is a term for motor vehicle theft in the United States.

Gameplay focuses on an open world where the player can complete missions to progress an overall story, as well as engage in various side activities. Most of the gameplay revolves around driving and shooting, with occasional role-playing and stealth elements. The series also has elements of the earlier beat 'em up games from the 16-bit era. The games in the Grand Theft Auto series are set in fictional locales modelled after real-life cities, at various points in time from the early 1960s to the 2010s. The original game's map encompassed three cities—Liberty City (based on New York City), San Andreas (based on San Francisco), and Vice City (based on Miami)—but later titles tend to focus on a single setting and expand upon the original three locales. Each game in the series centres on different respective protagonist who attempts to rise through the criminal underworld due to various motives, often accompanying themes of betrayal. Several film and music veterans have voiced characters in the games, including Ray Liotta, Dennis Hopper, Samuel L. Jackson, William Fichtner, James Woods, Debbie Harry, Axl Rose and Peter Fonda.

DMA Design began the series in 1997, with the release of the Grand Theft Auto. As of 2020, the series consists of seven standalone titles and four expansion packs. The third main title, Grand Theft Auto III, released in 2001, is considered a landmark game, and brought the series into a three-dimensional environment for the first time. Subsequent titles have followed and built upon the format established by Grand Theft Auto III, receiving significant acclaim. The games influenced other open-world games, and led to the label Grand Theft Auto clone on similar titles.

The series has been critically acclaimed, with all the main 3D entries in the franchise frequently ranked among the greatest and best-selling video games;] it has shipped more than 405 million units, making it one of the best-selling video game franchises. In 2006, Grand Theft Auto was featured in a list of British design icons in the Great British Design Quest organised by the BBC and the Design Museum. In 2013, The Telegraph ranked Grand Theft Auto among Britain's most successful exports. The series has also been controversial for its adult nature and violent themes, as well as for cut content.