Monty Python's Life of Brian, also known as Life of Brian, is a 1979 British comedy film written, directed and largely performed by the Monty Python comedy team. It tells the story of Brian Cohen (played by Graham Chapman), a young Jewish man who is born on the same day as, and next door to, Jesus Christ, and is subsequently mistaken for the Messiah.

The film contains themes of religious satire that were controversial at the time of its release, drawing accusations of blasphemy and protests from some religious groups. Thirty-nine local authorities in the UK either imposed an outright ban, or imposed an X (18 years) certificate (effectively preventing the film from being shown, as the distributors said the film could not be shown unless it was unedited and carried the original AA (14) certificate). Certain countries banned its showing[vague], with a few of these bans lasting decades. The film makers used such notoriety to benefit their marketing campaign, with posters stating "So funny it was banned in Norway!".

The film was a box-office success, grossing fourth-highest of any film in the UK in 1979 and highest of any British film in the United States that year. It has remained popular since then, receiving positive reviews and being named 'Greatest comedy film of all time' by several magazines and television networks.