A Perfect Circle (often referred to as APC) is an alternative rock supergroup formed by guitarist Billy Howerdel. The band's latest line-up featured Jeordie White (Marilyn Manson and formerly of Nine Inch Nails tour line-up) on bass, James Iha (formerly of The Smashing Pumpkins) on guitar, and prolific session drummer Josh Freese (also known from Nine Inch Nails tour line-up).

Although the group never officially disbanded, A Perfect Circle has been on hiatus since 2006, having not written new material, toured or recorded; but the band's personnel have kept busy with other projects.

Indexed at Wikipedia.