Downfall: The Case Against Boeing is a 2022 American documentary film directed by Rory Kennedy. Interviewing relevant people and featuring archival footage, the film looks into the events throughout the history of the aircraft manufacturer company Boeing that led to the crashes of Lion Air Flight 610 and Ethiopian Airlines Flight 302, both involving the Boeing 737 MAX 8 and occurring within a short time span, as well as its subsequent investigation. The film sides with interviewees in criticizing the capitalization of Boeing, noting that the urge to beat major competitor Airbus led to the neglect of component failures within the 737 MAX.

Downfall premiered in a virtual screening at the 2022 Sundance Film Festival on January 21, 2022, before being released on Netflix on February 18 as a Netflix Original Documentary. The film received wide critical acclaim for its comprehensiveness, narrative structure, and emotions, mostly aimed towards Kennedy and editor Don Kleszy. It also renewed public attention on the 737 MAX 8 case, causing further criticism of Boeing, who had initially declined to participate in filming and rebuked the film after its release.