John Duncan is an American musician and sound artist known for his experimental approach to music, primarily within the realms of noise and avant-garde. Active since the 1980s, Duncan's work often incorporates elements of performance art, field recordings, and conceptual sound design. He has released a number of albums, collaborating with various artists while exploring themes of violence, identity, and technology. Duncan's innovative and sometimes controversial work has garnered a significant following in underground music circles, making him a notable figure in the contemporary experimental music scene.