 George HamiltonJim Tanner | Jim Tanner |
 Suzanne PleshetteMargery Lansing | Margery Lansing |
 Richard CarlsonN. E. Van Zandt | N. E. Van Zandt |
 Yvonne De CarloSally Hallson | Sally Hallson |
 Earl HollimanTalbot Scott | Talbot Scott |
 Gary MerrillMark Corlane | Mark Corlane |
 Ken MurrayGrover | Grover |
 Barbara NicholsFlora | Flora |
 Arthur O'ConnellHenry Hallson | Henry Hallson |
 Nehemiah PersoffCarl Melnicker | Carl Melnicker |
 Aldo RayBruce | Bruce |
 Michael RennieArthur Nordlund | Arthur Nordlund |
 Miiko TakaMrs. Van Zandt | Mrs. Van Zandt |
 Celia LovskyMrs. Hallson | Mrs. Hallson |
 Vaughn TaylorMr. Hallson | Mr. Hallson |
 Lawrence MontaigneBriggs | Briggs |
 Beverly PowersSylvia | Sylvia |
 Forrest J. AckermanDelegate A.C. Fogbottom (uncredited) | Delegate A.C. Fogbottom (uncredited) |
| DDaniel ElamScientist (uncredited) | Scientist (uncredited) |
| KKen DuMainFun House Onlooker (uncredited) | Fun House Onlooker (uncredited) |
| WWilliam BurnsideFun House Onlooker (uncredited) | Fun House Onlooker (uncredited) |
| FFrieda RentieFun House Onlooker (uncredited) | Fun House Onlooker (uncredited) |
 Boyd 'Red' MorganMerry-Go-Round Operator (uncredited) | Merry-Go-Round Operator (uncredited) |
 Robert DemanYoung Man (uncredited) | Young Man (uncredited) |
 Minta DurfeeParty Guest (uncredited) | Party Guest (uncredited) |
 George HolmesParty Guest (uncredited) | Party Guest (uncredited) |
 Kenner G. KempParty Guest (uncredited) | Party Guest (uncredited) |
 Hank RobinsonParty Guest (uncredited) | Party Guest (uncredited) |
| DDavid ArmstrongParty Guest (uncredited) | Party Guest (uncredited) |
| EEd HaskettParty Guest (uncredited) | Party Guest (uncredited) |
