Big Mouth may refer to:

Film and television Big Mouth (American TV series), an animated television series Big Mouth (South Korean TV series), a 2022 South Korean television series The Big Mouth, 1967 comedy film starring Jerry Lewis Nickname of Martha Raye (1916–1994), TV and film actress

Music "Big Mouth" (Snoop Dogg song), 2017 "Big Mouth" (Nikki Yanofsky song), 2018 "Words (Big Mouth)", a song by Ian Hunter from the album Shrunken Heads "Big Mouth", a song by the Muffs from the album The Muffs "Big Mouth", a song by Nikki Lane from the album Highway Queen "Big Mouth", a song by Santigold from the album Master of My Make-Believe "Big Mouth", a song by Whodini from the album Escape Big Mouth (2024), an album by Brooke Alexx

Other uses Big Mouth (chief) (1822–1869), Native American Brulé Sioux leader Big Mouth House, publisher Big Mouth Billy Bass, animatronic singing toy

See also Bigmouth (disambiguation)