Knives Out (Original Motion Picture Soundtrack) is the soundtrack album to the 2019 film of the same name, directed by Rian Johnson, featuring an ensemble cast includes Daniel Craig, Chris Evans, Ana de Armas, Jamie Lee Curtis, Michael Shannon, Don Johnson, Toni Collette, LaKeith Stanfield, Katherine Langford, Jaeden Martell, and Christopher Plummer.

[5] It was the first time, he used a full-fledged orchestral score as, for all of Rian's previous films, he created sounds from utensils and real-life objects, due to the limited budget they have in hand.

"[1] The score was released into an album titled Knives Out (Original Motion Picture Soundtrack) by Johnson's Cut Narrative Records label.

[12] The album was pressed into a 180-gram disc vinyl, containing the full score, plus three bonus tracks: the solo piano version of "The Wake", "Party People" and "Walt Doesn’t Run Shit".

These include:[15] Knives Out's score by Nathan Johnson received acclaim from critics, who mentioned it as "terrifically ripe",[16] "lush and orchestral".

Their work gives the film a classy sheen that helps enliven the pulpy and sometimes hammy histrionics of the cast, and provides the whole thing with a sense of moodiness and vaguely sinister unease that sells the story and brings the audience into the environment.

"[17] Filmtracks.com said "Knives Out is a smart composition with a well-developed narrative and just enough charm and elegance to suffice for the plot, but its performances are rather flat" and continued "Johnson maintains a cautious but consistently elegant stance throughout the score, careful not to steal attention but function as though the mansion had a small ensemble of live performers in a neighboring room.

The result is highly productive but a step behind the deviousness of the script, this despite the composer's attempt to convey humor through parody applications of his music at times.

"[18] Gisanne Sophia of Marvelous Geeks Media wrote "Nathan Johnson then takes listeners through various familial themes with slower violin strings, building on emotions and the heightened tensions in the air.

The Knives Out original score is not only a perfect companion to the lunacy of the whodunit film, but it’s a brilliant standalone that’s especially appropriate for blaring just as it gets dark outside, and the first few drops of rain start to fall.

"[19] Johnson's only nomination for Knives Out score is the Best Music held at the 46th Saturn Awards in 2021, losing to John Williams for Star Wars: The Rise of Skywalker.