2018 African Swimming Championships – Men's 400 metre freestyle

The Men's 400 metre freestyle competition of the 2018 African Swimming Championships was held on 13 September 2018.

Records
Prior to the competition, the existing world and championship records were as follows.

The following new records were set during this competition.

Heats
The heats were started on 13 September at 09:40.

Final
The final was started on 10 September.