Swimming at the 2001 World Aquatics Championships – Men's 50 metre freestyle

The men's 50 metre freestyle event at the 2001 World Aquatics Championships was held on 22 (heats and semifinals ) and 23 July 2001 (final ) at the Fukuoka, Japan.

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

The following record was established during the competition: