Echoing the comic tone of the "Police Academy" films, Ninja Academy boasts an ensemble cast of hilarious characters, bonding while training hard, playing hard and ultimately, losing hard-- In the tough, unforgiving world of martial arts.
| Actor | Role |
|---|---|
| WWill EganJosh | Josh |
 Gerald OkamuraChiba | Chiba |
| KKelly RandallGayle | Gayle |
| MMichael DavidPhilip | Philip |
| JJeff RobinsonThe Mime | The Mime |
| KKathleen StevensSuzy | Suzy |
 Robert FactorGeorge | George |
 Art CamachoGonzales | Gonzales |
| OOrly BenyarPhillip's Girl | Phillip's Girl |
 Patti NegriClaude's Date | Claude's Date |
 Becky LeBeauNudist | Nudist |
| MMichele BurgerNudist | Nudist |
 Mark DacascosBlack Ninja (uncredited) | Black Ninja (uncredited) |
| LLisa MontgomeryLynn | Lynn |
| SSeth FosterAdleman | Adleman |
| JJack FreibergerClaude | Claude |
| AAl LampkinMr. Keegan | Mr. Keegan |
| MMichael MoranoTaxi Driver | Taxi Driver |
| DDeena DriskillPhillip's Girl | Phillip's Girl |
 Anthony S. JohnsonNeighbor | Neighbor |
 Larry MarkoButler | Butler |
| LLisa AltamiranoReceptionist | Receptionist |
| DDee CoppolaBusty Lady | Busty Lady |
| FFiama FricanoDream Girl | Dream Girl |
| KKerry O'BrienNudist | Nudist |
| BBonnie PaineNudist | Nudist |
| AAnna KimNudist | Nudist |
| SShari BlumNudist | Nudist |
| DD. PageNudist | Nudist |
| LLeon MercedesNudist | Nudist |