Nothing by mouth or nil by mouth, a medical instructionNil by Mouth (album), a 2015 album by BlancmangeNil by Mouth (charity), an anti-sectarian charity in Glasgow, ScotlandNil by Mouth (film), a 1997 British film by Gary Oldman"Nil by Mouth", a 2001 song by Blindspott"Nil by Mouth", a 2018 instrumental by Haken from Vector"Nil by Mouth", a 2021 song by Dean Blunt from Black Metal 2
