Hayley Mills as Mary Clancy

June Harding as Rachel Devery

Rosalind Russell as Mother Superior

Binnie Barnes as Sister Celestine

Camilla Sparv as Sister Constance

Mary Wickes as Sister Clarissa

Marge Redmond as Sister Liguori

Dolores Sutton as Sister Rose Marie

Margalo Gillmore as Sister Barbara

Portia Nelson as Sister Elizabeth

Marjorie Eaton as Sister Ursula

Barbara Bell Wright as Sister Margaret

Judith Lowry as Sister Prudence

Barbara Hunter as Marvel-Ann

Bernadette Withers as Valerie

Vicky Albright as Charlotte

Patty Ann Gerrity as Sheila

Vicki Draves as Kate

Wendy Winkelman as Sandy

Jewel Jaffe as Ginnie-Lou

Gail Liddle as Priscilla

Michael-Marie as Ruth

Betty Jane Royale as Gladys

Ronne Troup as Helen

Catherine Wyles as Brigette

Gypsy Rose Lee as Mrs. Mabel Dowling Phipps

Jim Boles as Mr. Gottschalk

Kent Smith as Uncle George Clancy

Pat McCaffrie as Mr. Devery

Harry Harvey as Mr. Grisson

Mary Young as Mrs. Eldridge

Jim Hutton as Mr. Petrie (uncredited)

Mews Small as Nun (uncredited)

Madge Blake as Meddling Train Passenger

Jesslyn Fax as Retirement Home Resident

Kathryn Minner as

Mews Small as