Good Night, and Good Luck (stylized as good night, and good luck.) is a 2005 historical drama film directed by George Clooney from a screenplay by Clooney and Grant Heslov. It stars David Strathairn, Patricia Clarkson, Clooney, Jeff Daniels, Robert Downey Jr. and Frank Langella, and portrays the conflict between veteran journalist Edward R. Murrow (Strathairn) and U.S. Senator Joseph McCarthy of Wisconsin, especially relating to the anti-communist Senator's actions with the Senate Permanent Subcommittee on Investigations.

Although released in black and white, it was filmed on color film stock, but on a grayscale set, and was color-corrected to black and white during post-production. It focuses on the theme of media responsibility, and also addresses what occurs when U.S. journalism offer voices of dissent from government policy. The movie takes its title (which ends with a period or full stop) from the line with which Murrow routinely signed off his broadcasts.

The film was a box office success and received critical acclaim for Clooney's direction, the writing, cinematography, production design and performances (particularly Strathairn's). It was nominated for six Academy Awards, including Best Picture, Best Director and Best Actor for Strathairn.