John may refer to the following:
- John-117 - The main protagonist of the Halo series.
- John Butkus - A video game animator employed by Bungie.
- John Courage - The son of the late Jake Courage and Mary Courage.
- John Forge - A veteran in the UNSC and one of the main characters in Halo Wars.
- John Gronquist - A special effects artist that helped produce Halo 3.
- John Howard - The lead designer of Halo: Combat Evolved during development.
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