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

The men's 50 metre backstroke event at the 2001 World Aquatics Championships took place 25 July. The heats and semifinals took place 24 July, with the final being held on 25 July.

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

The following record was established during the competition: