 Abigail BreslinNim Rusoe | Nim Rusoe |
 Jodie FosterAlexandra Rover | Alexandra Rover |
 Gerard ButlerJack Rusoe / Alex Rover | Jack Rusoe / Alex Rover |
 Michael CarmanCaptain | Captain |
| MMaddison JoyceEdmund | Edmund |
 Christopher James BakerEnsign | Ensign |
 Rhonda DoyleEdmund's Mother | Edmund's Mother |
 Bryan ProbetsAustralian Tourist #1 | Australian Tourist #1 |
 Jay Laga'aiaHelicopter Pilot | Helicopter Pilot |
 Mark BradyPurser | Purser |
 Anthony SimcoeFirst Mate | First Mate |
| PPeter CallanEdmund's Father | Edmund's Father |
| RRussell ButlerOld Fisherman | Old Fisherman |
| CColin GibsonCruise Director | Cruise Director |
| AAndrew NasonAustralian Tourist #2 | Australian Tourist #2 |
| DDorothy ThorsenBlue-Haired Woman | Blue-Haired Woman |
 Penny EveringhamOlder Woman Tourist | Older Woman Tourist |
| TTony BelletteOlder Man Tourist | Older Man Tourist |
| JJeff DornanTaxi Driver | Taxi Driver |
 John WaltonEvil Captor | Evil Captor |
| MMarea Lambert BarkerFlight Attendant | Flight Attendant |
| NNami ItonagaAirport Gate Attendant | Airport Gate Attendant |
| TTania PariStreet Vendor | Street Vendor |
| AAshley LondonBuffy Colt | Buffy Colt |
| SShannon van der DriftNim's Mother | Nim's Mother |
 Morgan GriffinAlice (uncredited) | Alice (uncredited) |
 Dennis KreuslerBuccaneer Pirate Chef (uncredited) | Buccaneer Pirate Chef (uncredited) |
| RRenae Smith TrevinoTourist (uncredited) | Tourist (uncredited) |
 Alphonso McAuleyRussell (uncredited) | Russell (uncredited) |
 Anthony PhelanLong John Silver (uncredited) | Long John Silver (uncredited) |
