| Ralph Macchio | Daniel LaRusso |
| Noriyuki ``Pat'' Morita | Mr. Kesuke Miyagi |
| Martin Kove | Kreese |
| Nobu McCarthy | Yukie |
| Danny Kamekona | Sato |
| Yuji Okumoto | Chozen |
| Tamlyn Tomita | Kumiko |
| Pat E. Johnson | Referee |
| Bruce Malmuth | Announcer |
| Joey Miyashima | Toshio |
| Will Hunt | Postman |
| Evan Malmuth | Cab driver |
| Lee Arnone | Stewardess |
| Sarah Kendall | Stewardess 2 |
| Garth Johnson | Autograph fan |
| Brett Johnson | Autograph fan |
| Eddie Smith | Bystander |
| Raymond Ma | Cab driver in Okinawa |
| George O'Hanlon Jr. | Soldier |
| Charlie Tanimoto | Miyagi's father |
| Tsuruko Ohye | Village woman |
| Arsenio ``Sonny'' Trinidad | Ichiro |
| Marc Hayashi | Taro |
| Robert Fernandez | Watchman |
| Natalie N. Hashimoto | Kumiko's street friend |
| Diana Mar | Girl in video store |
| Bradd Wong | Boy on Street |
| Clarence Gilyard Jr. | G.I. 1 |
| Michael Morgan | G.I. 2 |
| Jack Eiseman | G.I. 3 |
| Jeffrey Rogers | G.I. 4 |
| Aaron Seville | G.I. 5 |
| Wes Chong | Sato's houseman |
| William Zabka | Johnny |
| Chad McQueen | Dutch |
| Tony O'Dell | Jimmy |
| Ron Thomas | Bobby |
| Rob Garrison | Tommy |
Mr. Miyagi returns to Okinawa with his karate student and meets an old foe's challenge to a duel.
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