Under the Knife may refer to:

Film and television Under the Knife (film), a 2019 British documentary "Under the Knife" (Gotham), a television episode Louis Theroux: Under the Knife, a television documentary by Louis Theroux

Music Under the Knife (EP) an EP by Hatebreed "Under the Knife", a song by Exhumed from Anatomy Is Destiny "Under the Knife", a song by Kansas from Freaks of Nature "Under the Knife", a song by Labrinth from Atomic "Under the Knife", a song by Motörhead, B-side of "Killed by Death" "Under the Knife", a song by Rise Against from The Sufferer & the Witness

Other uses Trauma Center: Under the Knife, a Nintendo DS video game Under the Knife, a book by Krista Franklin "Under the Knife", a short story by H. G. Wells included in his collection The Plattner Story and Others "Under the Knife", a Baseball Prospectus column by Will Carroll Witch Doctor Vol. 1: Under the Knife, a collection of Witch Doctor comics