2003 Continental Championships
- 2002–03 AFC Champions League
- 2002–03 UEFA Champions League
- 2002–03 UEFA Cup
- 2002–03 UEFA Women's Cup
- 2003 All-Africa Games
- 2003 Asian Athletics Championships
- 2003 Asian Winter Games
- 2003 CONCACAF Champions' Cup
- 2003 CONCACAF Gold Cup
- 2003 Copa Libertadores
- 2003 European Figure Skating Championships
- 2003 OFC Women's Championship
- 2003 Pan American Games
- 2003 UEFA European Under-17 Championship
- 2003 World Championships (disambiguation)
- 2003 World Cup (disambiguation)
- 2003 World Junior Championships (disambiguation)
- 2003–04 CEV Champions League
- Continental championship (disambiguation)
- EuroBasket 2003