The film doesn't mention the Pink Panther diamond. By the 1970s, the name "Pink Panther" had become so synonymous with Inspector Clouseau and the animated panther featured in the opening credits that all future Clouseau films included "Pink Panther" in the title.
Blake Edwards' original cut ran 124 minutes, and was submitted to the British Board of Film Censors in 1976. Afterward, the film was cut to 103 minutes. That version was shown in cinemas, on VHS and on DVD. Most of the cut scenes involved Sellers' journey to, and arrival in, England. The 124-minute original cut has never surfaced, but a large chunk of the deleted footage was used in Trail of the Pink Panther (1982). The scenes include Peter Sellers in the car on the way to the airport, Sellers on a plane to England (excerpts are in the trailer), Sellers meeting the English police at the airport, and an extended version of Sellers going into his apartment near the beginning of the film, with rice flying everywhere. Deleted scenes involving Harvey Korman's character "Balls" also ended up in Trail of the Pink Panther (1982).
In several scenes Peter Sellers wears a necklace bearing a pendant with the Hindu OM symbol. Sellers' friend George Harrison, a Hare Krishna devotee, told of how he and Sellers, on a plane caught in a terrible storm, chanted the Hare Krishna mantra until it safely landed.
Cyd Child, who did the stunts for Diana Rigg and Linda Thorson in "The Avengers", appears with her parrot "Chrome". He originally belonged to Diana Rigg, but she hadn't enough time to spend with him, so she gave him to Cyd.