Mindless Self Indulgence (often abbreviated as MSI) is an American electropunk band from New York City and they formed in 1997. They define themselves as “electro-punk jungle pussy” or “industrial jungle pussy punk.”

Current members are:
- Jimmy Urine: vocals, synthesizer, programming (1997-present)
- Steve, Righ?: guitar, backing vocals (1997–present)
- Kitty Dunn: drums (1997–present)
- Lyn-Z Ballato-Way: bass guitar (2001–present)

Former members:
Vanessa Y.T.: bass guitar (1997–2001)