Janet Leigh as Rosie DeLeon

Dick Van Dyke as Albert F. Peterson

Ann-Margret as Kim McAfee

Maureen Stapleton as Mama Mae Peterson

Bobby Rydell as Hugo Peabody

Jesse Pearson as Conrad Birdie

Paul Lynde as Harry McAfee

Mary LaRoche as Doris McAfee

Michael Evans as Claude Paisley

Robert Paige as Bob Precht

Gregory Morton as Maestro Borov

Bryan Russell as Randolph McAfee

Milton Frome as Mr. Maude

Ed Sullivan as Himself

Ben Astar as Ballet Manager

Trudi Ames as Ursula

Frank Albertson as Mayor

Beverly Yates as Mayor's Wife

Frank Sully as Bartender

Bo Peep Karlin as Ursula's Mother

Melinda Marx as Teenager

Mell Turner as Shriner

Gil Lamb as Lanky Shriner

Lee Aaker as Student Leader

Karel Shimoff as Prima Ballerina

Donald Lawton as Russian Consul

Yvonne White as Telephone Operator

Richard Adams as Assistant Director (uncredited)

Sherry Granato as Nancy (uncredited)

Harold Miller as Production Crew Member (uncredited)

Jerry Orbach as Bob (Ed Sullivan Show Producer) (uncredited)

Evelyn Rudie as Teenager (uncredited)

Cosmo Sardo as Production Crew Member (uncredited)

Michael Smith as Teenager (uncredited)