2003 World Aquatics Championships
| 10th FINA World Championships | |
|---|---|
| Host city | Barcelona | 
| 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.