Brick is a 2005 American neo-noir mystery thriller film written and directed by Rian Johnson in his directorial debut, starring Joseph Gordon-Levitt. Brick was distributed by Focus Features, and opened in New York and Los Angeles on April 7, 2006. The film's narrative centers on a hardboiled detective story set in a California suburb. Most of the main characters are high school students. The film draws heavily in plot, characterization, and dialogue from hardboiled classics, especially those by Dashiell Hammett. The title refers to a block of heroin, compressed roughly to the size and shape of a brick.

The film won the Special Jury Prize for Originality of Vision at the 2005 Sundance Film Festival, and received positive reviews from critics. It has come to be often regarded as a cult classic.