A Dirty Shame is a 2004 American satirical sex comedy film written and directed by John Waters and starring Tracey Ullman, Johnny Knoxville, Selma Blair, and Chris Isaak. It follows a community in suburban Baltimore divided between people with highly conservative attitudes towards sexuality, and those who have been turned into sex addicts after experiencing concussions.

After premiering at the 2004 Toronto International Film Festival, A Dirty Shame was released in the United States on September 17, 2004. The film received mixed reviews from critics. Due to its sexual themes and content, it received an NC-17 rating from the Motion Picture Association of America, which limited the scope of its release and marketing, and it grossed $1.5 million domestically. Due to its poor box office performance, the film has stood as Waters' last directorial effort for over two decades.