Meryl Streep character Florence Foster Jenkins
Hugh Grant character St. Clair Bayfield
Simon Helberg character Cosme McMoon
Rebecca Ferguson character Kathleen Weatherley
Nina Arianda character Agnes Stark
Stanley Townsend character Phineas Stark
David Haig character Carlo Edwards
Bríd Brennan character Kitty
Christian McKay character Earl Wilson
John Sessions character Doctor
Elliot Levey character Edgar Booth Cunningham Jr
John Kavanagh character Arturo Toscanini
Allan Corduner character John Totten
Maggie Steed character Mrs. James O'Flaherty
Paola Dionisotti character Baroness Le Feyre
Thelma Barlow character Mrs Oscar Garmunder
Pat Starr character Mrs Vanderbilt
Liza Ross character Mrs EE Patterson
David Mills character Augustus Corbin
Josh O'Connor character Donaghy
Rhoda Lewis character Mrs Patsy Snow
Mark Arnold character Cole Porter
Nat Luurtsema character Tallulah Bankhead
Ewan Stewart character Colonel
Carl Davis character Orlando Adams
David Menkin character Carlton Smith
Sid Phoenix character Cpl. Jones
Tunji Kasim character Pvt. Smith
Cameron Cuffe character Gino
Jonathan Plowright character Ernest Ziegler
