| 53 from 48 nations|
28 Jul 2013 – 29 Jul 2013
Palau Sant Jordi
| Palau Sant Jordi, Barcelona, Spain|
The women's 100 metre butterfly event in swimming at the 2013 World Aquatics Championships took place on 28–29 July at the Palau Sant Jordi in Barcelona, Spain.
Swimming at the 2013 World Aquatics Championships – Women's 100 metre butterfly Wikipedia
Prior to this competition, the existing world and championship records were:
The heats were held at 10:00.
The swim-off was held at 12:09.
The semifinals were held at 18:02.
The final was held at 18:10.