GTA

• the metropolitan area of Toronto – see Greater Toronto Area
• the Georgia Technology Authority – a government agency in the U.S. state of Georgia [1]
• the Gainesville Theatre Alliance in Gainesville, Georgia [1]
• a crime in several jurisdictions – see Grand Theft Auto (crime)
• a series of computer and video games – see Grand Theft Auto (series)
• a movie, the directorial debut of Ron Howard – see Grand Theft Auto (movie)
• in genetics, Gene Transfer Agent