Events concerning the Grand Theft Auto series in 2003
- Grand Theft Auto: Vice City is released in the U.S. for the PC on May 12.
- Grand Theft Auto: Vice City is released in Europe for the PC on May 15.
- Grand Theft Auto: Double Pack is released for the PlayStation 2 on October 21.
- Grand Theft Auto: Double Pack is released for the Xbox on October 31.
- Tony Prince founds Maisonette 9.
- Giovanni Ancelotti is convicted of racketeering.
- Lester Leroc is arrested for possession of cocaine.
- Chan Jaoming is arrested for extortion.
- Rudy D'Avanzo is arrested for fraud.
- Charles Martin is arrested for fraud.
- Gracie Ancelotti is arrested for possession of cocaine.
- Cherise McCormic is arrested for driving while intoxicated.
- Michael Graves is arrested for campaign finance law violation.
- Michael Keane is arrested for armed robbery.
- Marlon Bridges is arrested for possession of crack cocaine.
- Chloe Parker is arrested for driving while intoxicated.
- James Pedeaston is arrested in Indonesia for child molesting.
- Vladimir Glebov is arrested for sexual assault.
- Luis Fernando Lopez is arrested for grand theft auto.
- Gordon Sargent is arrested for kidnapping.
- Bernie Crane is arrested for loitering: prostitution solicitation.
- Brucie Kibbutz is arrested for possession controlled substance: Steroids.
- Brucie Kibbutz is arrested for speeding violation.