John Walton Smith
- Category : Sports-Track-and-Field
- Type : PSP
- Profile : 6/2 - Role Model / Hermit
- Definition : Triple Split
- Incarnation Cross : LAX Refinement 1
He competed in the sprints events during his career
He is best known for winning the men's 400 metres event at the 1971 Pan American Games.
He remains the world record holder for the 440 yard dash at 44.5 seconds.