Boxcheats.com: Contains cheat codes for GTA 3 and Vice City. (Xbox)
eLook: Contains cheats and codes for Grand Theft Auto. (Gameboy Color)
Grand Theft Auto Games: Cheats for GTA 1, 2, and 3.
GTA Cheatz: Offers cheat codes for all the games in the series for PC and PlayStation.
GTA:UK: Contains cheats and hints for GTA 1, London 1969, 2, and 3, for the PC, PlayStation, PlayStation 2, and Dreamcast.
The Grand Theft Auto Emporium of Fun: Contains hints, cheats, tips and graphics.
TotalGTA: Contains cheats from GTA 1 and 2 for the PlayStation and PC.