In the airplane scene, Carter orders gefilte fish, a reference to a similar scene in Rush Hour 2 (2001) that never made the final cut, because of Chris Tucker's inability to pronounce the name of the dish at the time.
Jackie Chan had a cracked sternum and bruises to his shins from his stunts. In the credits, there is an outtake where Chan throws a table backwards with his legs into himself, accidentally, at Genevieve's suite.
Roman Polanski was a fan of the first two Rush Hour movies. When it was learned that this film is set in Paris, he asked director Brett Ratner and the producers whether they could give him a small role to appear. They happily complied with his wish.
When Lee and Carter first get in Georges' taxi, during the conversation, Georges says to Carter, "You guys can't even beat the Europeans in basketball anymore." He was referring to when Greece beat USA in the 2006 FIBA World Cup.
There were many people cast who declined the offer: director Brett Ratner tried casting Aishwarya Rai Bachchan and Li Gong, but was turned down by both actresses, Tony Jaa to do the film, but Jaa turned it down due to scheduling conflicts with Ong-bak 2 (2008), Yao Ming' to the cast, but the offer was declined (Ratner said he wanted to create a scene with Yao Ming similar to that of the scene with Kareem Abdul-Jabbar, who was also a basketball player, in Game of Death (1978), starring Bruce Lee.),
Roman Polanski (as the Paris commissioner) was uncredited in the film's cast because of the continuing controversy of his in absentia conviction for child molestation. He has been listed on mainland European copies of the movie, but nothing in America, Canada or England.
During the Dojo Scene in which Carter and Lee fight the giant, there is a picture in the middle of the shrine behind Master Yu. The picture is that of Chinese martial artist Huo Yuanjia, a Wushu master, and Chinese legend.
Steven Seagal was one of the first actors considered to play a villain, even Jean-Claude Van Damme was another consideration for a villain in this film; however, the screenplay underwent multiple rewrites that ultimately led to casting Hiroyuki Sanada as the film's main antagonist.
Actor Kevin Dillon was cast in a small role in Rush Hour 3 (2007). Filming for his show Entourage (2004) prevented Dillon from accepting the role, but it was turned into a storyline for Dillon's character, Johnny Drama, on Entourage (2004).
This was Roman Polanski's first role in an American film in fifteen years (since Back in the U.S.S.R. (1992), an American-Japanese production in 1992), and only his second role in an American film in the past thirty-three years (since Chinatown (1974)).
Herman Cain was originally going to have a cameo as Carter's father, but the idea was later dismissed for unknown reasons. In the first movie, Carter said his father was killed on a routine traffic stop. Cain's scene would have involved Lee and Carter visiting Carter's father's house, where they cause a commotion by having a fight using household objects, angering the elder Carter.
This was the first Rush Hour movie to not feature a Michael Jackson song and have Chris Tucker dancing to it. The first movie had "Another Part Of Me" with Tucker dancing to it at the beginning of the film; he improvised the dance. The second movie had the infamous club scene which included Tucker singing and dancing to the song "Don't Stop Till You Get Enough." At the beginning of this movie, Tucker dances in Michael Jackson form to a Prince song.