Meryl Streep
Role: Florence Foster Jenkins
Hugh Grant
Role: St. Clair Bayfield
Simon Helberg
Role: Cosmé McMoon
Rebecca Ferguson
Role: Kathleen Weatherley
Nina Arianda
Role: Agnes Stark
Stanley Townsend
Role: Phineas Stark
Allan Corduner
Role: John Totten
Christian McKay
Role: Earl Wilson
David Haig
Role: Carlo Edwards
John Sessions
Role: Dr. Hermann
John Kavanagh
Role: Arturo Toscanini
Pat Starr
Role: Mrs. Vanderbilt
Maggie Steed
Role: Mrs. James O'Flaherty
Thelma Barlow
Role: Mrs. Oscar Garmunder
Liza Ross
Role: Mrs. EE Patterson
Paola Dionisotti
Role: Baroness Le Feyre
Rhoda Lewis
Role: Mrs. Patsy Snow
Aida Garifullina
Role: Lily Pons
David Mills
Role: Augustus Corbin
David Menkin
Role: Carlton Smith
Sid Phoenix
Role: Corporal Jones
Tunji Kasim
Role: Private Smith
Carl Davis
Role: Orlando Adams
Lloyd Hutchinson
Role: Microphone Engineer
Richard Kilgour
Role: Elevator Operator
Jonathan Plowright
Role: Ernest Ziegler
Josh O'Connor
Role: Donaghy
Brian Fisher
Role: Finkler
Stefan Bednarczyk
Role: Stephen Foster
Nathan Osgood
Role: Stagehand
Caolan Byrne
Role: Stagehand 2
John Guerrasio
Role: Newspaper Vendor
Ewan Stewart
Role: Colonel
Georgina Morton
Role: Pearl
James Sobol Kelly
Role: Edgar (Diner)
Grant Gillespie
Role: Brooklyn Man
Nat Luurtsema
Role: Tallulah Bankhead
Philip Rosch
Role: Archie the Doorman
Elliot Levey
Role: Edgar Booth Cunningham, Jr.
Danny Mahoney
Role: Clifford B. Thornton III
Simon Markson
Role: Piano Tuner
Mark Arnold
Role: Cole Porter
Adele Smyth-Kennedy
Role: Wag Woman
Jenny Hawkins
Role: Florence's Dresser
Hallam Rice-Edwards
Role: Corbin's Gang
Victory Maburutse
Role: Corbin's Gang
Rosy Benjamin
Role: Corbin's Gang
Oliver King
Role: Corbin's Gang
James Wallace
Role: Corbin's Gang
Charles Streeter
Role: Corbin's Gang
Andrew Sloane
Role: Corbin's Gang
Madeleine Knight
Role: Corbin's Gang
Stephanie Lane
Role: Corbin's Gang
Philip Gascoyne
Role: New York Journalist (uncredited)
