 | James Coburn als Dr. Sidney Schaefer |
 | Godfrey Cambridge als Don Masters |
 | Severn Darden als Kropotkin |
 | Joan Delaney als Nan Butler |
 | Pat Harrington, Jr. als Arlington Hewes |
 | Barry McGuire als Old Wrangler |
 | Jill Banner als Snow White |
 | Eduard Franz als Ethan Allen Cocket |
 | Walter Burke als Henry Lux |
 | Will Geer als Dr. Lee-Evan |
 | William Daniels als Wynn Quantrill |
 | Joan Darling als Jeff Quantrill |
| Sheldon Collins als Bing Quantrill |
 | Arte Johnson als Sullivan |
| Martin Horsey als 1st Puddlian |
 | William Beckley als 2nd Puddlian |
 | Kathleen Hughes als White House Tourist |
| Walt Davis als Phoneman (uncredited) |
| John Gunn als FBR Agent (uncredited) |
| Pitt Herbert als White House Tour Guide (uncredited) |
 | Soon-Tek Oh als Chinese Agent (uncredited) |
 | Dyanne Thorne als Cocktail Waitress (uncredited) |
 | Hank Worden als Dirty Old Man (uncredited) |
 | Stephen Young als Man in Suit Killed in the Beginning (uncredited) |
| Theodore J. Flicker | Director |
| Lalo Schifrin | Original Music Composer |
| William A. Fraker | Director of Photography |
| Hal Pereira | Art Direction |
| Robert R. Benton | Set Decoration |
| Arthur Krams | Set Decoration |
| Pato Guzman | Production Design |
| Stuart H. Pappé | Editor |
| Al Roelofs | Art Direction |
| Stanley Rubin | Producer |
| Jack Bear | Costume Design |
| Howard W. Koch | Executive Producer |
| Theodore J. Flicker | Writer |
| Sugar Blymyer | Hairstylist |
| Emile LaVigne | Makeup Artist |
| Nellie Manley | Hair Supervisor |
| Wally Westmore | Makeup Supervisor |
| William Davidson | Unit Production Manager |
| Kurt Neumann | Assistant Director |
| Robert Post | Sound Recordist |
| John Wilkinson | Sound Recordist |
| Albert Whitlock | Matte Painter |
| Roger Creed | Stunts |
| Larry Duran | Stunts |
| Kenny Endoso | Stunts |
| Fred Lerner | Stunts |
| Bill M. Ryusaki | Stunts |
| Bill Saito | Stunts |
| David M. Walsh | Camera Operator |
| Joe Smith | Gaffer |
| Emil Richards | Musician |
| Lalo Schifrin | Conductor |
