Brise-Glace (French for "ice-breaker", as in the type of boat) was a 1990s instrumental avant-rock "supergroup" composed of Jim O'Rourke (guitar, organ, tape and "razor blade"), Darin Gray (bass guitar), Dylan Posa (guitar), and Thymme Jones (drums).
Formed in 1993, the mostly Chicago-based band had recorded and toured sporadically in various configurations until 1997. Brise-Glace used guitar improvisation, white noise, and found sounds to create a brooding and almost minimal, eerie musical sound.