Ralph Macchio

as Daniel LaRusso

Pat Morita

as Mr. Miyagi

Elisabeth Shue

as Ali Mills

William Zabka

as Johnny Lawrence

Martin Kove

as John Kreese

Randee Heller

as Lucille LaRusso

Ron Thomas

as Bobby

Rob Garrison

as Tommy

Chad McQueen

as Dutch

Tony O'Dell

as Jimmy

Israel Juarbe

as Freddy

William Bassett

as Mr. Mills

Larry B. Scott

as Jerry

Juli Fields

as Susan

Dana Andersen

as Barbara

Frank Burt Avalon

as Chucky

Jeff Fishman

as Billy

Ken Daly

as Chris

Tom Fridley

as Alan

Pat E. Johnson

as Referee

Bruce Malmuth

as Ring Announcer

Darryl Vidal

as Karate Semi-Finalist

Frances Bay

as Lady with Dog

Christopher Kriesa

as Official

Bernie Kuby

as Mr. Harris

Joan Lemmo

as Restaurant Manager

Helen Siff

as Cashier

Larry Drake

as Yahoo #1

David Abbott

as Yahoo #2

Molly Basler

as Cheerleading Coach

Brian Davis

as Boy in Bathroom

David De Lange

as Waiter

Erik Felix

as Karate Student

Peter Jason

as Soccer Coach

Todd Lookinland

as Chicken Boy

Clarence McGee Jr.

as Referee #2

William Norren

as Doctor

Sam Scarber

as Referee #3

Scott Strader

as Eddie

Shannon Wilcox

as Mrs. Mills (Ali's Mother) (uncredited)

Sharon Spelman

as Mrs. Lawrence (Johnny's Mother) (uncredited)

Andrew Shue

as Member of Cobra Kai (uncredited)

Donald DeNoyer

as Karate Student (uncredited)

David LeBell

as Guy at Halloween Dance (uncredited)

Stan Rodarte

as Student at Dance (uncredited)

Monty O'Grady

as Club Patron (uncredited)

Robert Strong

as Club Patron (uncredited)

Chris Casamassa

as Tournament Guest (uncredited)

Charles Gallant

as Karate Fan (uncredited)