Swimming at the 2019 African Games – Men's 100 metre butterfly

The Men's 100 metre butterfly competition of the 2019 African Games was held on 23 August 2019.

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

Heats
The heats were started on 23 August at 10:45.

Final
The final was started on 23 August at 17:00.