This guide contains all cheat codes for Grand Theft Auto 3. Cheats do not prevent obtaining 100% of game statistics. However, it is advised to create a backup save, as some cheats cannot be disabled and may affect the gameplay preventing you from completing the main story or the side missions.

Cheats tagged as (IRREVERSIBLE!) are irreversible until you load another save or start a new game.

NOTE: All cheats can be activated in the pause menu or during gameplay.