2005 World Championships
- 2005 BDO World Darts Championship
- 2005 Continental Championships (disambiguation)
- 2005 IAAF World Cross Country Championships
- 2005 IAAF World Half Marathon Championships
- 2005 IBF World Championships
- 2005 Men's World Ice Hockey Championships
- 2005 PDC World Darts Championship
- 2005 Women's World Ice Hockey Championships
- 2005 World Allround Speed Skating Championships
- 2005 World Amateur Boxing Championships
- 2005 World Aquatics Championships
- 2005 World Championships in Athletics
- 2005 World Cup (disambiguation)
- 2005 World Figure Skating Championships
- 2005 World Junior Championships (disambiguation)
- 2005 World Men's Curling Championship
- 2005 World Single Distance Speed Skating Championships
- 2005 World Snooker Championship
- 2005 World Weightlifting Championships
- 2005 World Women's Curling Championship
- Alpine World Ski Championships 2005
- Bandy World Championship 2005
- Biathlon World Championships 2005
- FIDE World Chess Championship 2005
- FIS Nordic World Ski Championships 2005