Seán Clancy is an experimental composer and performer from Ireland.

He writes music using acoustic instruments, electronic instruments, location recordings, and people doing things in performance not involving any instruments at all. For the most part, his practice is involved with the act of translating non-musical things into music, using projected text in performance, and exploring music as a devised process. His music is often long, repetitive and contains sustained tones, but at times is also short and fragmented.

His work has been performed by nice people as far west as Denver, Colorado, and as far east as Beijing, China. He has a performance duo with Andy Ingamells that explores collaborative processes through a kind of visual musique concrète, arising from the images of performance situations. Seán is a Senior Lecturer in Music and BMus Composition Coordinator at Royal Birmingham Conservatoire.