Valentina Cortese

Maria Brentano / Brent / Lena Collins

Serge Reggiani

Louis Balan

Audrey Hepburn

Nora Brentano

Megs Jenkins

Penny

Irene Worth

Miss Jackson

Reginald Tate

Inspector Eliot

Charles Goldner

Anselmo

Angela Fouldes

Nora Brentano as a child

Simone Silva

Undetermined (Minor Role - Paris Sequence) (uncredited)

Norman Williams

Sergeant Newcome

Michael Shepley

Manager of the British Pavilion

Athene Seyler

Mrs. Reginald Kellick

Sydney Tafler

Syd Burnett

Geoffrey Hibbert

Steenie

John Ruddock

Daly

Michael Allan

Rodd

John Field

Fedor Luki

Hugo Schuster

General Galbern

Lionel Harris

Frack

Rollo Gamble

Bentley

John Penrose

Bill

John Chandos

John

Michael Ripper

Charlie

Louis Mansi

Member of Paris Committee

John Gabriel

Member of Paris Committee

Olga Landiak

Member of Paris Committee

Frederick Schiller

Galbern's Bodyguard

Phaedros Antonio

Galbern's Bodyguard

Gaston Richer

Queval

Derek Elphinstone

Plain Clothes Man

Edward Evans

Plain Clothes Man

Jack McNaughton

Postman

Ingeborg von Kusserow

Shoe Shop Girl

Bob Monkhouse

Hairdresser

Helen Ford

Scarf Woman

Ann Lancaster

Manicurist

Grace Draper

Floozie

Bertram Shuttleworth

Little Man

Pamela Harrington

Waitress

John Allen

The Valet

Bay White

Nursing Sister

Joe Linnane

Irish Police Inspector

Sam Kydd

Irish Police Sergeant