Swimming at the 2019 World Aquatics Championships – Men's 100 metre freestyle

The Men's 100 metre freestyle competition at the 2019 World Championships was held on 24 and 25 July 2019.

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

Heats
The heats were held on 24 July at 10:15.

Semifinals
The semifinals were held on 24 July at 20:26.

Final
The final was held on 25 July at 20:22.