Swimming at the 2023 World Aquatics Championships – Men's 100 metre freestyle

The men's 100 metre freestyle competition at the 2023 World Aquatics Championships was held on 26 and 27 July 2023.

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

Heats
The heats were held on 26 July at 10:47.

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

Final
The final was held on 27 July at 20:21.