The men's 4 x 100 metre relay at the 2007 World Championships in Athletics was held at the Nagai Stadium on 31 August and 1 September.
2007 World Championships in Athletics – Men's 4 × 100 metres relay Wikipedia
* Runners who participated in the heats only and received medals.
Prior to the competition, the following records were as follows.
The first 2 of each heat (Q) plus the 2 fastest times (q) qualify.