SiNN can refer to:

- A Paris three piece based band, mixing heavy riffs, fast tempos and more progressive atmospheres.

- A Hampton Roads, Virginia-based, three-piece metal/thrash-metal band specialising in face-melting guitar riffs. SiNN, or Stranded in Newport News, is comprised of Chad Bailey on vocals, Chris Smith on bass, and Nate Ridenhour on drums. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.