Genesis P-Orridge (born Neil Megson February 22, 1950), is an English musician, performance artist, writer, and advocate of various counterculture ideas. His early confrontational performance work with COUM Transmissions in the late 1960s - early 1970s dealt with subjects such as prostitution and was regarded as controversial. Later musical work with Throbbing Gristle and Psychic TV received wider exposure, including some chart-topping singles.

Some have attributed to Genesis P-Orridge, a statement that he "invented" the concept of the rave party, and the techno sub genre acid house. The claim that he, in fact, did invent" the genres is disputed. Genesis P-Orridge has been associated with the culture of Body modification, as well as magical or religious movements, founding the (now defunct) Thee Temple Ov Psychick Youth.