Swimming at the 2024 World Aquatics Championships – Men's 100 metre freestyle

The Men's 100 metre freestyle competition at the 2024 World Aquatics Championships was held on 14 and 15 February 2024.

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

The following records were established during the competition:

* Split from the men's 4 × 100 m freestyle relay

Heats
The heats were started on 14 February at 09:45.

Semifinals
The semifinals were started on 14 February at 19:26.

Final
The final was held on 15 February at 19:21.