For Those Who Think Young

James Darren

as Gardner "Ding" Pruitt III

Pamela Tiffin

as Sandy Palmer

Paul Lynde

as Syd Hoyt

Tina Louise

as Topaz McQueen

Bob Denver

as Kelp

Robert Middleton

as Burford Sanford Cronin

Nancy Sinatra

as Karen Cross

Claudia Martini

as Sue Lewis

Ellen Burstyn

as Dr. Pauline Swenson

Woody Woodbury

as Woody Woodbury

Louis Quinn

as Gus Kestler

Sammee Tong

as Clyde

Addison Richards

as Dean Watkins

Paul "Mousie" Garner

as Mousie

Benny Baker

as Lou

Anna Lee

as Laura Pruitt

Sheila Bromley

as Mrs. Harkness

Jimmy Griffin

as "I'm Gonna Walk All Over This Land" Performer

Richard Delvy

as "I'm Gonna Walk All Over This Land" Performer

Jack La Rue

as Cronin's Business Associate

Allen Jenkins

as Col. Leslie Jenkins

Robert Armstrong

as Norman Armstrong

Edie Baskin

as College Girl

Laurie Burton

as College Girl

John Christopher

as College Boy

Pam Colbert

as College Girl

Mickey Dora

as College Boy

Lada Edmund Jr.

as College Girl

Marie Edmund

as College Girl

Linda Feldman

as College Girl

Ed Garner

as College Boy

Laura Hale

as College Girl

Susan Hart

as College Girl

Jan March

as College Girl

Michael Nader

as College Boy

Maureen O'Hanlon

as College Girl

Leslie Perkins

as College Girl

Donna Russell

as College Girl

Don Voyne

as College Boy

Gordon Wescourt

as College Boy

Larry Weston

as College Boy

Maria White

as College Girl

Harry Antrim

as Harry (uncredited)

Bess Flowers

as Jane (uncredited)

Alberto Morin

as Marion (uncredited)

Roger Smith

as Detective Smitty (uncredited)

George Raft

as Detective (uncredited)

Amadee Chabot

as Beach Girl (uncredited)

Maria De Aragon

as Dancer (uncredited)

Anthony Eustrel

as Faculty Member (uncredited)

Joe Gray

as Club Guest (uncredited)

Tony Regan

as Jim (uncredited)

Ronne Troup

as Club Patron (uncredited)

Christine Williams

as Girl with Broken Leg (uncredited)