Thee Headcoats Sect is a British garage rock band formed in 1989 by Billy Childish. The band's sound is characterized by its raw, lo-fi aesthetic and Childish's distinctive vocals. Thee Headcoats Sect have released over 40 albums and toured extensively throughout their career. They are known for their energetic live performances and their dedication to the DIY ethos.

Childish is the driving force behind Thee Headcoats Sect, and his songwriting is often autobiographical, dealing with themes of love, loss, and the working class experience. The band's music has been praised for its honesty and authenticity, and they have been cited as an influence by many contemporary garage rock bands.