The Happiest Millionaire is a 1967 musical film starring Fred MacMurray, based upon the true story of Philadelphia millionaire Anthony J. Drexel Biddle. The film, featuring music by the Sherman Brothers, was nominated for an Academy Award for Best Costume Design by Bill Thomas. The screenplay is by A. J. Carothers and based on the play that was based on the book My Philadelphia Father by Cordelia Drexel Biddle, the daughter of Anthony Biddle.
The film first premiered in Hollywood on June 23, 1967 and had its original running time of 172 minutes. In the early 1960s, Walt Disney acquired the rights to the play. It would be the last live-action musical film to be produced by him, who died during its production. Originally at a length of 164 minutes, The Happiest Millionaire was edited down twenty minutes for its November 1967 premiere at the Radio City Music Hall. For its general release, the film was again edited down to almost two hours. The film was poorly received from critics, who criticized its running time though its music and cast were praised, and was a box office disappointment.