 Warren HullBritt Reid / Green Hornet | Britt Reid / Green Hornet |
 Anne NagelLenore Case | Lenore Case |
 Keye LukeKato | Kato |
 Pierre WatkinBoss Crogan | Boss Crogan |
 Wade BotelerMichael Axford | Michael Axford |
 Eddie AcuffLowery - a Reporter | Lowery - a Reporter |
 Arthur LoftTauer - Chief Gangster | Tauer - Chief Gangster |
 James SeayBordine - a Gangster | Bordine - a Gangster |
 Joe DevlinJoe Dolan - Henchman | Joe Dolan - Henchman |
 William HallDon DeLuca - Henchman | Don DeLuca - Henchman |
 Dorothy LovettFrances Grayson / Stella Merja | Frances Grayson / Stella Merja |
| JJay MichaelForanti - Construction Racketeer | Foranti - Construction Racketeer |
| CCharles MillerGeorge K. Otterson | George K. Otterson |
 Jean BrooksGloria Manning | Gloria Manning |
| IIrving MitchellBreedon | Breedon |
 William ForrestFrederick Harper | Frederick Harper |
 Eddie DunnFoley - Racketeer | Foley - Racketeer |
 C. Montague ShawWeaver - Gang Chemist | Weaver - Gang Chemist |
 Roy BarcroftCop at Newspaper Truck Vandalism | Cop at Newspaper Truck Vandalism |
 Robert BarronHaggis - Crooked Nightclub Owner | Haggis - Crooked Nightclub Owner |
 James BlaineJason Eldridge | Jason Eldridge |
 Al BridgeShip's Captain | Ship's Captain |
| RRalph BrooksCain's Assistant | Cain's Assistant |
| HHenrietta BurnsideMrs. Carter - Widow | Mrs. Carter - Widow |
 William P. CarletonGloria's Father | Gloria's Father |
| AAllan CavanPolice Chief Harding | Police Chief Harding |
 Lane ChandlerCop Car-Chasing Foranti | Cop Car-Chasing Foranti |
 Stephen ChaseMr. Evans - Construction Engr. | Mr. Evans - Construction Engr. |
 Jack CheathamPete - Steelmill Watchman | Pete - Steelmill Watchman |
 Jack Rube CliffordMcCoig - Homeowner Thug | McCoig - Homeowner Thug |
