A group of strangers come across a man dying after a car crash who proceeds to tell them about the $350,000 he buried in California. What follows is the madcap adventures of those strangers as each attempts to claim the prize for himself.
You can now watch It's a Mad, Mad, Mad, Mad World online on the following streaming providers in the United States.
| Directing | Stanley Kramer | Director |
| Writing | William Rose | Screenplay |
| Writing | Tania Rose | Screenplay |
| Production | Stanley Kramer | Producer |
| Sound | Ernest Gold | Original Music Composer |
| Camera | Ernest Laszlo | Director of Photography |
| Editing | Gene Fowler Jr. | Editor |
| Editing | Robert C. Jones | Editor |
| Editing | Frederic Knudtson | Editor |
| Art | Rudolph Sternad | Production Design |
| Art | Gordon Gurnee | Art Direction |
| Art | Joseph Kish | Set Decoration |
| Costume & Make-Up | Bill Thomas | Costume Design |
| Costume & Make-Up | George Lane | Makeup Artist |
| Costume & Make-Up | Lynn F. Reynolds | Makeup Artist |
| Costume & Make-Up | Bud Westmore | Makeup Artist |
| Crew | Paul Mantz | Aerial Coordinator |
| Crew | Frank Tallman | Aerial Coordinator |
| Directing | Ivan Volkman | Other |
| Production | Anne P. Kramer | Producer's Assistant |
| Production | Clem Beauchamp | Production Manager |
| Sound | John K. Kean | Sound Engineer |
| Sound | Walter Elliott | Sound Editor |
| Production | Bud Pine | Production Coordinator |
| Directing | Bert Chervin | Assistant Director |
| Directing | George R. Batcheller Jr. | Assistant Director |
| Directing | Charles Scott | Assistant Director |
| Camera | Charles F. Wheeler | Camera Operator |
| Camera | Dick Johnson | Assistant Camera |
| Costume & Make-Up | Joe King | Costume Supervisor |
| Sound | Art Dunham | Music Editor |
| Camera | Morris Rosen | Grip |
| Directing | Marshall Schlom | Script Supervisor |
| Lighting | Joseph Edesa | Gaffer |
| Camera | Martin Kashuk | Assistant Grip |
| Art | Art Cole | Property Master |
| Sound | Clem Portman | Sound Re-Recording Mixer |
| Sound | Roy Granville | Sound Re-Recording Mixer |
| Sound | Vinton Vernon | Sound Re-Recording Mixer |
| Costume & Make-Up | Connie Nichols | Hairdresser |
| Art | Saul Bass | Title Designer |
| Crew | Carey Loftin | Stunt Coordinator |
| Camera | Irman Roberts | Additional Photography |
| Camera | Hal McAlpin | Additional Photography |
| Visual Effects | Farciot Edouart | Visual Effects |
| Visual Effects | Linwood G. Dunn | Visual Effects |
| Visual Effects | James Gordon | Visual Effects |
| Crew | Danny Lee | Special Effects |
| Sound | Ernest Gold | Songs |
| Sound | Mack David | Songs |
| Writing | William Rose | Story |
| Writing | Tania Rose | Story |
| Crew | Buddy Van Horn | Stunts |
| Crew | Loren Janes | Stunt Double |
| Crew | Bob Herron | Stunts |
| Crew | Paul Baxley | Stunts |
| Crew | Tap Canutt | Stunts |
| Crew | Max Balchowsky | Stunts |
| Crew | Richard E. Butler | Stunts |
| Crew | Bill Couch | Stunt Double |
| Crew | Dick Crockett | Stunts |
| Crew | May Boss | Stunt Double |
| Crew | Carol Daniels | Stunts |
| Crew | George DeNormand | Stunts |
| Crew | Gary Epper | Stunts |
| Crew | Dick Geary | Stunts |
| Crew | Stephanie Epper | Stunts |
| Crew | Sol Gorss | Stunts |
| Crew | Chuck Hayward | Stunts |
| Crew | John Indrisano | Stunts |
| Crew | John Hudkins | Stunt Double |
| Crew | Gil Perkins | Stunts |
| Crew | Jack Perkins | Stunts |
| Crew | Regis Parton | Stunt Double |
| Crew | Wally Rose | Stunts |
| Crew | George Robotham | Stunt Double |
| Crew | Fred Scheiwiller | Stunts |
| Crew | Tom Steele | Stunts |
| Crew | Helen Thurston | Stunt Double |
| Crew | Jesse Wayne | Stunt Double |
| Crew | Dale Van Sickel | Stunt Driver |
| Crew | Paul Stader | Stunts |
| Crew | Alex Sharp | Stunts |
| Crew | Carl Saxe | Stunts |
| Crew | Eddie Smith | Stunts |
| Crew | Joe Pronto | Stunts |
| Crew | Walt La Rue | Stunts |
