2008 World Championships may refer to:
- Athletics: 2008 IAAF World Indoor Championships
- Cross-country running: 2008 IAAF World Cross Country Championships
- Half marathon: 2008 IAAF World Half Marathon Championships
- Bowls: World Bowls Championships 2008
- Chess: World Chess Championship 2008
- Curling:
- Darts: 2008 BDO World Darts Championship
- Darts: 2008 PDC World Darts Championship
- Figure skating: 2008 World Figure Skating Championships
- Ice hockey: 2008 Men's World Ice Hockey Championships
- Ice hockey: 2008 Women's World Ice Hockey Championships
- Snooker: 2008 World Snooker Championship
- Speed skating:
- Allround: 2008 World Allround Speed Skating Championships
- Sprint: 2008 World Sprint Speed Skating Championships
- Single distances: 2008 World Single Distance Speed Skating Championships