The men's 4 × 400 metres relay event at the 2018 African Championships in Athletics was held on 4 and 5 August in Asaba, Nigeria.
[1] * Athletes who competed in heats only and received medals.
Qualification: First 3 teams of each heat (Q) plus the next 2 fastest (q) qualified for the final.
Note: Some information was gathered from the video of the races[4]