 | Britt Ekland als The Mother |
 | Ben Gazzara als Fred |
 | Sterling Hayden als Daniel Grudge |
 | Pat Hingle als Ghost of Christmas Present |
 | Steve Lawrence als Ghost of Christmas Past |
 | Percy Rodriguez als Charles |
 | Eva Marie Saint als WAVE Lt. Gibson |
 | Peter Sellers als Imperial Me |
 | Robert Shaw als Ghost of Christmas Future |
 | James Shigeta als Japanese Doctor |
 | Barbara Ann Teer als Ruby |
 | Peter Fonda als Marley Grudge (uncredited) |
 | Joe Santos als Number 32 (uncredited) |
| Henry Mancini | Original Music Composer |
| Rod Serling | Writer |
| Joseph L. Mankiewicz | Director |
| Arthur J. Ornitz | Director of Photography |
| Robert Lawrence | Editor |
| Nathan Greene | Editor |
| Joseph L. Mankiewicz | Producer |
| C.O. Erickson | Associate Producer |
| Edgar Rosenberg | Executive Producer |
| Gene Callahan | Production Design |
| Jack Wright Jr. | Set Decoration |
| Anna Hill Johnstone | Costume Design |
| Irving Buchman | Makeup Artist |
| Jim Di Gangi | Production Manager |
| C.O. Erickson | Production Supervisor |
| Dan Eriksen | Assistant Director |
| Lee Aronsohn | Assistant Art Director |
| Thomas Wright | Property Master |
| Gerald B. Greenberg | Sound Effects Editor |
| Jim Shields | Sound |
| Dick Vorisek | Sound Recordist |
| Richard Carruth | Music Editor |
| Marguerite James | Script Supervisor |
