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- John-O, a member of an intelligence agency in Grand Theft Auto: Liberty City Stories.
- John Boy Lurie, a character mentioned in the Redneck promotional website for Grand Theft Auto 2.
- John Craig, a fictional author in Grand Theft Auto: San Andreas.
- John Chesapeake, a Weazel News reporter in Grand Theft Auto IV.
- John F. Hickory, a Florida secessionist in Grand Theft Auto: Vice City.
- John Hunter, candidate for governor of Liberty City in GTA IV.
- John Norris, a character mentioned in the Liberty Tree website for Grand Theft Auto III.
- John Sickerman, a reporter on VCPR in Grand Theft Auto: Vice City Stories.
- John,a surgeon in Flatline that can be killed.