Fastest run 400 metres (male)
- Who
- Wayde Van Niekerk
- What
- 43.03 second(s)
- Where
- Brazil
- When
- 14 August 2016
The fastest 400 metres run by a male athlete is 43.03 seconds, achieved by Wayde van Niekerk (South Africa) at the 2016 Olympic Games, in Rio de Janeiro, Brazil, on 14 August 2016
The previous record set by Michael Johnson had stood since 1999.
Wayde won gold in the event with the new world record achieved in the final.