1993 World Championships in Athletics – Men's 400 metres
These are the official results of the Men's 400 metres event at the 1993 IAAF World Championships in Stuttgart, Germany. There were a total number of 43 participating athletes, with six qualifying heats and the final held on Tuesday 1993-08-17.

Final

Semifinals
Held on Monday 1993-08-16

Quarterfinals
Held on Sunday 1993-08-15

Qualifying heats
Held on Saturday 1993-08-14