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| 10th FINA World Championships | |
|---|---|
| Host city | Barcelona, Spain |
| Date(s) | July 12–27, 2003 |
| Officially opened by | Juan Carlos I |
| 2003 FINA World Championships | ||
|---|---|---|
| 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 | ||
| Free | women | |
| Duet | ||
| Free | women | |
| Team | ||
| Free | women | |
| Combination | women | |
| Water polo | ||
| Tournament | men | women |
The 10th FINA World Aquatics Championships were held July 12–27, 2003 in Barcelona, Spain. The championships featured competition in all 5 of FINA's disciplines: Swimming, Diving, Synchronised swimming, Water Polo, and Open Water Swimming.
Competition was held in the facilities all around the city: Palau Sant Jordi, Piscines Bernat Picornell, Piscina Municipal de Montjuïc, Club de Natació de Barcelona and Port Vell.