Six Degrees of Inner Turbulence is the sixth studio album by American progressive metal band Dream Theater, released as a double-disc album on January 29, 2002, through Elektra Records.

It is the first full-length Dream Theater album to feature a title track.

It is also their second longest studio album to date, after The Astonishing (2016).

Influences for the album's writing and recording, according to the authors, include: All music is composed by John Myung, John Petrucci, Mike Portnoy and Jordan Rudess, per the album liner notes