The Rhythm Section is a 2020 action thriller film directed by Reed Morano, with a screenplay by Mark Burnell based on his novel of the same name. Starring Blake Lively, Jude Law and Sterling K. Brown, it follows a grieving woman who seeks revenge after discovering that the plane crash that killed her family was a terrorist attack.

It was released in the United States on January 31, 2020 by Paramount Pictures. It received mixed reviews, with critics generally praising Lively’s performance but critical of the plot. It was a box-office bomb, with the all-time worst wide-opening weekend for a film playing on over 3,000 screens. Two weeks later, it suffered the biggest-ever drop in screens when it was pulled from 2,955, with Paramount projected to lose $30–40 million.