John Lee Hancock Director Emma Thompson P.L. Travers Actor Tom Hanks Walt Disney Actor Paul Giamatti Ralph Actor Jason Schwartzman Richard Sherman Actor Colin Farrell Travers Goff Actor Bradley Whitford Don DaGradi Actor Ruth Wilson Margaret Goff Actor B.J. Novak Robert Sherman Actor Rachel Griffiths Aunt Ellie Actor Dendrie Taylor Lillian Disney Actor Kathy Baker Tommie Actor Victoria Summer Julie Andrews Actor Ronan Vibert Diarmuid Russell Actor Annie Rose Buckley Ginty Actor Melanie Paxson Dolly Actor Kelly Marcel Screenwriter Sue Smith Screenwriter Alison Owen Producer Ian Collie Producer Philip Steuer Producer Paul Trijbits Executive Producer Andrew Mason Executive Producer Christine Langan Executive Producer Troy Lum Executive Producer John Schwartzman Cinematographer Mark Livolsi Film Editing Thomas Newman Original Music Michael Corenblith Production Design Lauren E. Polizzi Art Director Susan Benjamin Set Dresser Daniel Orlandi Costume Design Ronna Kress Casting