Kevin Kline as Cole Porter

Ashley Judd as Linda Porter

Jonathan Pryce as Gabriel

Kevin McNally as Gerald Murphy

Sandra Nelson as Sarah Murphy

Allan Corduner as Monty Woolley

Peter Polycarpou as Louis B. Mayer

Keith Allen as Irving Berlin

James Wilby as Edward Thomas

Kevin McKidd as Bobby Reed

Caroline O'Connor as Ethel Merman

Dean Constantin as Hotel Porter

Peter Jessop as Diaghilev

Angie Hill as Ellin Berlin

Cole Porter as Musical Performer - "You're The Top"

Robbie Williams as Musical Performer - "It's De-Lovely"

Elvis Costello as Musical Performer - "Let's Misbehave"

Alanis Morissette as Musical Performer - "Let's Do It, Let's Fall In Love"

Sheryl Crow as Musical Performer - "Begin the Beguine"

Mick Hucknall as Musical Performer - "I Love You"

Diana Krall as Musical Performer - "Just One of Those Things"

Vivian Green as Musical Performer - "Love For Sale"

Lara Fabian as Musical Performer - "So In Love"

Mario Frangoulis as Musical Performer - "So In Love"

Natalie Cole as Musical Performer - "Ev'ry Time You Say Goodbye"

Lemar as Musical Performer - "What Is This Thing Called Love?"

John Barrowman as Musical Performer - "Night and Day"

Hélène Cardona as Club Guest (voice) (uncredited)

Rene Costa as Club Guest (uncredited)

Richard Dillane as Bill Wrather

Edward Baker-Duly as Boris Kochno

Harry Ditson as Dr. Moorhead

Tyler Hamilton as Honoria Murphy

Lexie Peel as Patrick Murphy

Greg Sheffield as Boath Murphy

Jeff Harding as Cody

Susannah Fellows as Mrs. L.B. Mayer

Teddy Kempner as Stage Manager