 Elvis PresleyScott Hayward / 'Tom Wilson' | Scott Hayward / 'Tom Wilson' |
 Shelley FabaresDianne Carter | Dianne Carter |
 Will HutchinsTom Wilson / 'Scott Heyward' | Tom Wilson / 'Scott Heyward' |
 Bill BixbyJames J. Jamison III | James J. Jamison III |
 Gary MerrillSam Burton | Sam Burton |
 James GregoryDuster Heyward | Duster Heyward |
 Suzie KayeSally | Sally |
 Harold PearyDoorman at Shores Hotel | Doorman at Shores Hotel |
 Marj DusayWaitress | Waitress |
 Jack GoodHathaway | Hathaway |
| OOlga KayaGigi | Gigi |
 Angelique PettyjohnGloria | Gloria |
| SSam RiddleAnnouncer | Announcer |
 Wallace EarlEllie (as Amanda Harley) | Ellie (as Amanda Harley) |
 Sue EnglandCigarette Girl | Cigarette Girl |
| LLee KriegerBartender | Bartender |
 Arlene CharlesOlive | Olive |
| SSteve CoryBellhop | Bellhop |
 Teri GarrDancer (uncredited) | Dancer (uncredited) |
 Corbin BernsenBoy at Playground (uncredited) | Boy at Playground (uncredited) |
 Lee MajorsMan in Restaurant (uncredited) | Man in Restaurant (uncredited) |
 Red WestIce Cream Vendor (uncredited) | Ice Cream Vendor (uncredited) |
| RRobert P. LiebMr. Barasch (uncredited) | Mr. Barasch (uncredited) |
| MMelvin F. AllenCrewman (uncredited) | Crewman (uncredited) |
| HHerb BarnettWaiter (uncredited) | Waiter (uncredited) |
 Charlie HodgeMr. Hayward's Barber (uncredited) | Mr. Hayward's Barber (uncredited) |
| JJonathan KramerDancer at Clambake Party (uncredited) | Dancer at Clambake Party (uncredited) |
| AAnita MannDancer (uncredited) | Dancer (uncredited) |
 Dal McKennonGas Station Attendant (uncredited) | Gas Station Attendant (uncredited) |
 Christopher RiordanBeach Boy (uncredited) | Beach Boy (uncredited) |
