Rebecca Ferguson Kathleen Weatherley
Hugh Grant St. Clair Bayfield
Simon Helberg Cosmé McMoon
Josh O'Connor Donaghy
Meryl Streep Florence Foster Jenkins
Christian McKay Earl Wilson
Maggie Steed Mrs. James O'Flaherty
Nina Arianda Agnes Stark
Lloyd Hutchinson Microphone Engineer
Ewan Stewart Colonel
Allan Corduner John Totten
David Haig Carlo Edwards
Stephen Frears Writer, Director
Stanley Townsend Phineas Stark
John Sessions Dr. Hermann
Brid Brennan Kitty
Mark Arnold Cole Porter
Gareth Cousins Art Direction
Karen Cohen Makeup Artist
Rhoda Lewis Mrs. Patsy Snow
Karen Elliott Music Supervisor
John Kavanagh Arturo Toscanini
Josh Wood Carpenter
John Guerrasio Newspaper Vendor
Tunji Kasim Private Smith
Rob Farris Digital Intermediate
Thelma Barlow Mrs. Oscar Garmunder
Paola Dionisotti Baroness Le Feyre
Elliot Levey Edgar Booth Cunningham, Jr.
Consolata Boyle Costume Design
Iain Struthers First Assistant Camera
Carl Davis Orlando Adams
Ray Marston Wigmaker
Nathan Osgood Stagehand
Danny Cohen Director of Photography
Becki Ponting Supervising Sound Editor
Philip Rosch Archie the Doorman
Aida Garifullina Lily Pons
James Sobol Kelly Edgar (Diner)
Leo Davis Casting
Caolan Byrne Stagehand 2
Alexandre Desplat Original Music Composer
Sid Phoenix Corporal Jones
J. Roy Helland Hairstylist, Makeup Artist
Pat Starr Mrs. Vanderbilt
David Menkin Carlton Smith
Philip Gascoyne New York Journalist (uncredited)
Eunice Huthart Stunt Coordinator
Terry Davies Music Director
Sue Hills Script Supervisor
Marion Weise Costume Supervisor
Ian Wilson Supervising Sound Editor
Grant Gillespie Brooklyn Man
Jo McLaren Stunt Coordinator
Anita Burger Hairstylist
Greg Lockett Chuck
Paul McGeachan Gaffer
Beverley Binda Hairstylist
Valerio Bonelli Editor
Michael Kuhn Producer
Stuart Morton Music Editor
Liza Ross Mrs. EE Patterson
Jenny Hawkins Florence's Dresser
Dar Dash Antonio
Alan MacDonald Production Design
Patrick Malone Digital Intermediate
Stefan Bednarczyk Stephen Foster
Cameron Cuffe Gino
Stephanie Lane Corbin's Gang
Andrea Cracknell Hairstylist
Tahira Herold Makeup Artist
Lissy Holm Casting