Inside of Emptiness is the sixth studio album by American musician John Frusciante, originally released on October 26, 2004 on Record Collection, and is the fourth in a series of six releases, issued from June 2004 to February 2005. The album features contributions from Josh Klinghoffer and The Mars Volta's Omar Rodríguez-López.

Frusciante notes, "It's really powerful, but in a gentle way. There's a soothing quality. It has hard things on it, and even the soft things have a heaviness to them. The song "Scratches" is emotionally heavy to me, even though it's not distorted guitars and bashing drums. There's another song about a couple's baby dying. There's a lot of spontaneity and recklessness and not giving a fuck."