- Clifton Webb
- Lynn Belvedere
- Shirley Temple
- Ellen Baker Ashley
- Tom Drake
- Bill Chase
- Alan Young
- Avery Brubaker
- Jessie Royce Landis
- Mrs. Chase
- Kathleen Hughes
- Kay Nelson
- Taylor Holmes
- Dr. Gibbs
- Alvin Greenman
- Cornelius 'Corny' Whittaker
- Paul Harvey
- Dr. Keating
- Barry Kelley
- Police Sgt. Griggs
- Robert Patten
- Joe Fisher
- Norma Amigo
- Sorority Girl
- Edward Biby
- Faculty Member
- Carol Brannon
- Tri Gam Coed
- John F. Bray
- Undetermined Secondary Role
- Colin Campbell
- Professor Lindley
- Peggie Castle
- Jean Auchincloss
- Jeff Chandler
- Police Officer #66
- Pattee Chapman
- Isabelle Pinkley
- Carmen Clifford
- College Girl
- Clancy Cooper
- Mac - Police Officer #97
- Evelyn Eaton
- Sally
- Sally Forrest
- Miss Cadwaller - Dr. Gibbs' Secretary
- Kathleen Freeman
- Gwendolyn
- Geneva Gray
- Tri Gam Coed
- Jack Laird
- Dr. Phillips
- Lee MacGregor
- Hickey
- Frank Mills
- Drunk
- Joyce Otis
- Fluffy
- Elaine Ryan
- Tri Gam Coed
- Reginald Sheffield
- Professor Ives
- Arthur Space
- Proctor for Entrance Exam
- Lotte Stein
- Marta - the Cook
- Gil Stratton
- Beanie - Track Meet Announcer
- Lonnie Thomas
- Davy Ashley
- Ruth Tobey
- Nancy
- Judith Trafford
- Tri Gam Coed
- Helen Westcott
- Tri Gam Coed
- Rhoda Williams
- Sorority Girl
- Isabel Withers
- Mrs. Myrtle - the Baby-Sitter
