GTA stands for a number of things:

Grand Theft Auto:

Main disambiguation: Grand Theft Auto

• Motor vehicle theft, a crime in several jurisdictions
• Grand Theft Auto (series), a computer and video game series
  • Grand Theft Auto (video game), the first game in the series
• Grand Theft Auto (movie), 1977 directorial debut of Ron Howard

Or:

• Global Technology Associates, Inc., a private US technology corporation. GTA
• Greater Toronto Area, the metropolitan area of Toronto
• Georgia Technology Authority, a government agency in Georgia (U.S. state) ^*
• Gainesville Theatre Alliance, in Gainesville, Georgia ^*
• Gene Transfer Agent, in genetics
• Gran Turismo Allegerita, Alfa Romeo race car based on the Giulia, and current model designation
• Garson Transit Authority

GTA | GTA | GTA | GTA