Bigmouth may refer to:
"Bigmouth", a song by Underworld Bigmouth, an ogre in The Smurfs comics and animated cartoon series
Marine life Bigmouth buffalo, fish Bigmouth goby, fish Bigmouth skate, fish Bigmouth rocksnail, snail
See also
"Bigmouth Strikes Again", a 1986 alternative rock song by The Smiths Big Mouth (disambiguation)