"Bigmouth Strikes Again" is a 1986 song by the English rock band the Smiths from their third album The Queen Is Dead. Written by Johnny Marr and Morrissey, the song features self-deprecating lyrics that reflected Morrissey's frustrations with the music industry at the time. Musically, the song was inspired by the Rolling Stones' "Jumpin' Jack Flash" and centres around a guitar riff that Marr wrote during a 1985 soundcheck.

"Bigmouth Strikes Again" was released as the lead single from the album, bypassing Rough Trade's preferred choice, "There Is a Light That Never Goes Out". The single reached number 26 in the UK Singles Chart and has since seen critical acclaim along with several versions recorded by other artists.