2000 World Championships may refer to:
- Alpine skiing: Alpine World Ski Championships 2000
- Aquatics: 2000 World Aquatics Championships
- Athletics: 2000 World Championships in Athletics
- Cross-country running: 2000 IAAF World Cross Country Championships
- Road running: 2000 IAAF World Road Running Championships
- Badminton: 2000 BWF World Championships
- Bandy: Bandy World Championship 2000
- Biathlon: Biathlon World Championships 2000
- Boxing: 2000 World Amateur Boxing Championships
- Chess: FIDE World Chess Championship 2000
- Curling:
- Darts: 2000 BDO World Darts Championship
- Darts: 2000 PDC World Darts Championship
- Figure skating: 2000 World Figure Skating Championships
- Football: 2000 FIFA Club World Championship
- Futsal: 2000 FIFA Futsal World Championship
- Beach soccer: 2000 Beach Soccer World Championship
- Ice hockey: 2000 Men's World Ice Hockey Championships
- Ice hockey: 2000 IIHF Women's World Championship
- Netball: 2000 Netball World Championships
- Nordic skiing: FIS Nordic World Ski Championships 2000
- Speed skating:
- Allround: 2000 World Allround Speed Skating Championships
- Sprint: 2000 World Sprint Speed Skating Championships
- Single distances: 2000 World Single Distance Speed Skating Championships