The Undercover Man (1949) — Cast
Cast
| Peter Brocco | (uncredited) |
| Tom Coleman | Plainclothesman |
| James Whitmore | Pappas |
| Silvio Minciotti | Moroccan Market Vendor |
| John Butler | Bookie |
| Michael Cisney | Michael |
| Glenn Ford | Frank |
| Leo Penn | Ethel Gordon |
| Frank Tweddell | Herzog |
| Ben Erway | Store Clerk |
| Sidney Dubin | Bomber Harris |
| Allen Mathews | Policeman |
| Cosmo Sardo | Departing Ascan |
| Wally Rose | Hoodlum |
| Robert Osterloh | Manny |
| John George | (uncredited) |
| Everett Glass | (uncredited) |
| Wheaton Chambers | Mussburger's Secretary |
| Edwin Max | Horse |
| Frank Mayo | Foreman |
| Joan Lazer | Rosa |
| George Douglas | District Attorney |
| Daniel Meyers | |
| Harlan Warde | Hoodlum |
| Than Wyenn | Cabbie |
| Esther Zeitlin | |
| Larry Steers | Movie Symbol |
| Helen Wallace | O'Rourke |
| Sol Gorss | Hoodlum |
| Jim Drum | Policeman |
| Cy Malis | Hoodlum |
| Bernard Sell | |
| Ed Randolph | |
| Nina Foch | Warren |
| Anthony Caruso | Salvatore |
| Rose Plumer | Resident |
| Robert Malcolm | Malibu |
| Bert Stevens | Plainclothesman |
| Glen Thompson | Hoodlum |
| Robert Haines | Office Worker |
| John Ireland | (uncredited) |
| Esther Minciotti | Rocco Lampone |
| Ralph Volkie | Big Momma |
| Tom Hanlon | Announcer |
| Pat Lane | Policeman |
| Joe Mantell | Newsboy |
| John F. Hamilton | Shannon |
| Ted Jordan | Hoodlum |
| Irene Martin | |
| William Rhinehart | Helicopter Gunman |
| Paul Kruger | Malibu |
| Howard St. John | Horan |
| Franklin Parker | |
| Al Murphy | |
| Kay Medford | Laverne |
| Angela Clarke | Theresa Dallavale |
| Virginia Farmer | Weisner |
| Kit Guard | Passerby |
| Roy Darmour | Hoodlum |
| Barry Kelley | O'Rourke |
| Brian O'Hara | Policeman |
| Paul Marion | Hoodlum |
| Jack Gordon | Hoodlum |
| Peter Virgo | Bookie |
| Arthur Tovey | (uncredited) |
| William Vedder | Druggist |
| David Bauer | Stanley Loomis |
| Joe Palma | Policeman |
| Richard Bartell | Bailiff |
| Billy Nelson | Bouncer |
| Stella LeSaint | |
| Patricia Barry | Ethel Gordon |
| Bill Stubbs | Rude Gambler |
| Marcella Cisney | Ferguson |
Crew
| Walter Holscher | Art Direction |
| George Duning | Music |
| Jean Louis | Costume Designer |
| Greta Ardine | Hairstylist |
| Joseph H. Lewis | Director |
| Wilbur McGaugh | Assistant Director |
| Jack Rubin | Screenplay |
| Jack A. Goodrich | Sound Engineer |
| William Kiernan | Set Decoration |
| Al Clark | Editor |
| George Duning | Music Director |
| Burnett Guffey | Director of Photography |
| Sydney Boehm | Screenplay |
| Robert Rossen | Producer |
| Robert J. Schiffer | Makeup Artist |
| Jean Louis | Costume Design |
| Frank J. Wilson | Writer |