Foetus is a solo musical project of Australian JG Thirwell that was formed in 1981. Foetus' music is most frequently described as Industrial or No-Wave while also incorporating orchestral elements, sometimes sounding like a full orchestra despite being a one man project.

Foetus has released 11 studio albums, all of which have 4 letter and one syllable titles, under an array of different names, each including the word “foetus”. Foetus has gone under these names: Foetus Under Glass (1981), You’ve Got Foetus on Your Breath (1981-‘82), Foetus Over Frisco (1982), Foetus in Your Bed (1982), Phillip & His Foetus Vibrations (1982), Foetus Art Terrorism (1984), Foetus Über Frisco (1984), Foetus Of Excellence (1985), Scraping Foetus Off The Wheel (1985-'87), The Foetus All Nude Revue (1987), Foetus Interruptus (1988), Foetus Corruptus (1988), Foetus Eruptus (1989), Foetus, Inc. (1989 & 1990), Foetus in Excelsis Corruptus Deluxe (1992), Foetus Flesh (Unknown), Foetus Über Alles (Unknown) Jim Foetus and The Transvestites From Hell (Unknown) and finally Foetus (1995-Present Day).

Thirwell’s work as Foetus has gone on to influence many industrial projects such as Nine Inch Nails, Pig and Cop Shoot Cop, among others.