Medverkande
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Frank WelkerGeorge - Will FerrellThe Man in the Yellow Hat
- Drew BarrymoreMaggie
- Eugene LevyClovis
- Dick Van DykeMr. Bloomsberry
- David CrossJunior
- Joan PlowrightMiss Plushbottom
- Ed O'RossIvan
- Clint HowardBalloon Man
- Michael ChinyamurindiEdu
- Kath SoucieAnimal Control Receptionist
- Billy WestManager
- Alexander GouldKId
- Matthew O’CallaghanRegissör
- Brian GrazerProducent
- Ron HowardProducent
- David KirschnerProducent
- Ken KaufmanFörfattare
- David ReynoldsFörfattare
- Jack JohnsonMusik
- Heitor PereiraMusik