Cary Grant

Dr. Noah Praetorius

Jeanne Crain

Deborah Higgins

Finlay Currie

Shunderson

Hume Cronyn

Prof. Rodney Elwell

Walter Slezak

Prof. Barker

Sidney Blackmer

Arthur Higgins

Basil Ruysdael

Dean Lyman Brockwell

Katherine Locke

Miss James

Margaret Hamilton

Sarah Pickett (uncredited)

Jack Kelly

Student (uncredited)

Leon Tyler

Student (uncredited)

Bess Flowers

Concertgoer (uncredited)

Gail Bonney

Dean's Secretary (uncredited)

William Bryant

Student Manager (uncredited)

Julia Dean

Old Lady (uncredited)

John Davidson

Faculty Board Member (uncredited)

Stuart Holmes

Faculty Board Member (uncredited)

Lawrence Dobkin

Business Manager (uncredited)

Billy House

Coonan (uncredited)

Carl M. Leviness

Concertgoer (uncredited)

Adele Longmire

Mabel (uncredited)

Joyce Mackenzie

Gussie (uncredited)

Ray Montgomery

Doctor (uncredited)

Ann Morrison

Dietician (uncredited)

George Offerman, Jr.

Uriah Haskins (uncredited)

Parley Baer

Toy Store Salesman (uncredited)

Loretta Russell

Concertgoer (uncredited)

Irene Seidner

Cook (uncredited)

Esther Somers

Mrs. Pegwhistle (uncredited)

Carol Varga

Cadaver (uncredited)

Will Wright

Uncle John Higgins (uncredited)

Carleton Young

Technician (uncredited)