The men's 50 metre freestyle competition at the 2023 World Aquatics Championships was held on 28 and 29 July 2023.

[1][2][3] Prior to the competition, the existing world and championship records were as follows.

[4] The heats were started on 28 July at 11:12.

[5] The swim-off to decide the first replacement was started on 28 July at 12:57.

[7] The swim-off to decide the first replacement was started on 28 July at 22:09.