Self Immolation is a record label and publishing company run by J. G. Thirlwell. Originally an actual label for Thirlwell's self-released early Foetus EPs and albums, Self Immolation became more akin to a vanity label for Thirlwell's releases on Some Bizzare Records and Wax Trax! Records. Most Self Immolation releases are identified by a call number beginning with a Foetal-inspired "WOMB" designator.

Beginning in the early 1990s, Thirlwell began a second personal label, Ectopic Entertainment (often shortened to Ectopic Ents). Its exact relation to Self Immolation is unclear: initially called a "subsidiary" of Self Immolation, it appears to have later wholly replaced Self Immolation. Coming full circle, Thirlwell's self-released Manorexia project is released on Ectopic Ents.