| Women's 100 metre butterfly at the 2003 FINA World Championships |
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| Dates | 20 July 2003 (heats, semifinals) 21 July 2003 (final) |
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| Winning time | 57.96 seconds | |||||||||
| Medalists | ||||||||||
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| «2001 | 2005» | |||||||||
| 2003 FINA World Championships Barcelona, Spain |
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|---|---|---|
| Diving | ||
| Individual | ||
| 1 m | men | women |
| 3 m | men | women |
| 10 m | men | women |
| Synchronised | ||
| 3 m | men | women |
| 10 m | men | women |
| Open water swimming | ||
| 5 km | men | women |
| 10 km | men | women |
| 25 km | men | women |
| Swimming | ||
| Freestyle | ||
| 50 m | men | women |
| 100 m | men | women |
| 200 m | men | women |
| 400 m | men | women |
| 800 m | men | women |
| 1500 m | men | women |
| Backstroke | ||
| 50 m | men | women |
| 100 m | men | women |
| 200 m | men | women |
| Breaststroke | ||
| 50 m | men | women |
| 100 m | men | women |
| 200 m | men | women |
| Butterfly | ||
| 50 m | men | women |
| 100 m | men | women |
| 200 m | men | women |
| Individual medley | ||
| 200 m | men | women |
| 400 m | men | women |
| Freestyle relay | ||
| 4×100 m | men | women |
| 4×200 m | men | women |
| Medley relay | ||
| 4×100 m | men | women |
| Synchronised swimming | ||
| Solo | women | |
| Duet | women | |
| Team | women | |
| Combination | women | |
| Water polo | ||
| Team | men | women |
The women's 100 metre butterfly event at the 2003 World Aquatics Championships took place between 20 July – 21 July. Both the heats and semifinals were held on 20 July with the heats being held in the morning session and the semifinals being held in the evening session. The final was held on 21 July.
Contents |
Prior to the competition, the existing world and championship records were as follows.
| Name | Nationality | Time | Location | Date | |
|---|---|---|---|---|---|
| World record | Inge de Bruijn | Netherlands | 56.61 | Sydney | 17 September 2000 |
| Championship record | Petria Thomas | Australia | 58.27 | Fukuoka | 28 July 2001 |
The following records were established during the competition:
| Date | Round | Name | Nationality | Time | WR | CR |
|---|---|---|---|---|---|---|
| July 20 | Heats | Jenny Thompson | United States | 58.14 | CR | |
| July 20 | Semifinals | Jenny Thompson | United States | 57.99 | CR | |
| July 21 | Final | Jenny Thompson | United States | 57.96 | CR |
| Rank | Name | Nationality | Time | Notes |
|---|---|---|---|---|
| Jenny Thompson | United States | 57.96 | CR | |
| Otylia Jędrzejczak | Poland | 58.22 | ||
| Martina Moravcová | Slovakia | 58.24 | ||
| 4 | Alena Popchanka | Belarus | 58.90 | |
| 5 | Yafei Zhou | China | 59.08 | |
| 6 | Anna-Karin Kammerling | Sweden | 59.14 | |
| 7 | Yuko Nakanishi | Japan | 59.32 | |
| 8 | Natalie Coughlin | United States | 59.63 |
Key: CR = Championship record