AnnaSophia Robb as Bethany Hamilton

Helen Hunt as Cheri Hamilton

Dennis Quaid as Tom Hamilton

Carrie Underwood as Sarah Hill

Kevin Sorbo as Holt Blanchard

Ross Thomas as Noah Hamilton

Chris Brochu as Timmy Hamilton

Lorraine Nicholson as Alana Blanchard

Jeremy Sumpter as Byron

Sonya Balmores as Malina Birch

Craig T. Nelson as Dr. David Rovinsky

Cody Gomes as Keoki

Branscombe Richmond as Ben Aipa

Titus Kinimaka as Titus

John Philbin as Fuel TV Reporter #2

Tahini Bartolome as Girl at Foodland

Bridget Tully as Mother at Foodland

Tiffany Hofstetter as Rosemary

Kelly Crean as Front Yard News Reporter

Dylan Slater as Turtle Bay Open Announcer

Annie Gerstenberger as Thailand Village Elder

Sean McNamara as Rip Curl Executive

Yasmin Dar as Transworld Surf Reporter #1

Christie Brooke as National Surf Fan #1

Cayla Moore as Surfer Girl #1

Moon Otteman as Surfer Girl #2

David Tice as Contest Official

Wesley Mann as Calvin

Patrick Richwood as Todd

Kimberly-Rose Wolter as Nurse

Kaleo Relator as Boom

Irie Driscoll as Ukulele Girl #1

Faith Fay as Media Gnat

David Chokachi as Paramedic #1

David Stanfield as Nationals Announcer #1

Beau Hodge as Nationals Announcer #2

Dutch Hofstetter as Brandon

Michael Coots as Photoshoot Photograher

Kaipo Guerrero as HI Regionals Announcer #1

Rocky Canon as HI Regionals Announcer #2

Mark Kubr as ESPN Reporter

Kim Morgan Greene as Female Reporter

Shelley Trotter as Nurse #2

Arlene Newman as Cydney Blanchard

Bailey Nagy as Surfer Olivia Jenner

Leilani Gryde as Surfer Zoe Madsen

Kristen Steiner as Surfer Kaila Kahani

Lauren Beach as Autograph Seeker (uncredited)

Davo Coria as Photographer #2 (uncredited)

Christian Franklin as Keoki's Friend (uncredited)

Massi Furlan as (voice) (uncredited)

Sean Douglas Hoban as Photographer Assistant (uncredited)

Eric James as Keoki's Friend (uncredited)

Troy Manandic as Youth (uncredited)

Josh Margulies as Halloween Party Surfer (uncredited)

Stephen Meyers as Youth Group (uncredited)

Ingrid Seid as Surfer Fan (uncredited)

Christopher Simms as News Photographer (uncredited)

Joe Toro as Paramedic #2 (uncredited)

Roy Vongtama as Voice Artist (uncredited)

Joseph Wilson as Kauai Local (uncredited)