- Hayley Mills
- Patti Randall
- Dean Jones
- Zeke Kelso
- Dorothy Provine
- Ingrid Randall
- Roddy McDowall
- Gregory Benson
- Neville Brand
- Dan
- Elsa Lanchester
- Mrs. MacDougall
- William Demarest
- Mr. MacDougall
- Frank Gorshin
- Iggy
- Richard Eastham
- Supervisor Newton
- Grayson Hall
- Margaret Miller
- Tom Lowell
- Canoe Henderson
- Richard Deacon
- Drive-in-Mgr.
- Iris Adrian
- Landlady Mrs. Tabin
- Liam Sullivan
- Graham
- Don Dorrell
- Spires
- Gene Blakely
- Cahill
- Karl Held
- Kelly
- Ed Wynn
- Mr. A. Hofstedder
- Larry J. Blake
- Police Officer
- Syn Cat
- D.C. the Cat
- John Cliff
- FBI Agent Hart
- Ben Lessy
- Drive-In Concessionaire
- Clark Ross
- Agent
- Joe Warfield
- Drive-In Patron (Wilmer)
