Debbie Reynolds

Pansy Hammer

Bobby Van

Dobie Gillis

Barbara Ruick

Lorna Ellingboe

Bob Fosse

Charlie Trask

Hanley Stafford

George Hammer

Lurene Tuttle

Mrs. Eleanor Hammer

Hans Conried

Prof. Pomfritt

Charles Lane

Prof. Obispo

Archer MacDonald

Harry Dorcas

Kathleen Freeman

Stella Kowalski

Almira Sessions

Aunt Naomi

Willis Bouchey

Dr. Askit (uncredited)

Charles Halton

The Dean (uncredited)

Percy Helton

Mr. Hammersmith (uncredited)

Donald Elson

Advisor (uncredited)

Don Weis