"Bad Girl" is a song by the American garage rock band the Zakary Thaks, written by the whole group—Chris Gerniottis, Pete Stinson, Stan Moore, Rex Gregory, and John Lopez—and was first released for the band's debut single on J-Beck Records in July 1966 (see 1966 in music). The song was an immensely successful regional hit in Texas, precipitating "Bad Girl"'s national release on Mercury Records later in the year. Since its initial distribution, the tune has received further recognition for its appearance on several compilation albums.