Chaosphere is the third album by Swedish metal band Meshuggah. It was released on 9 November 1998 by Nuclear Blast, and is the only studio album to feature bassist Gustaf Hielm. Chaosphere's sound shows the band toning down some of the thrash style of their previous releases in favor of the technical, polyrhythmic, groove-oriented sound they would continue to explore on subsequent albums. A video was made for "New Millennium Cyanide Christ".
The Japanese version of the album contains a bonus song, titled "Unanything", as track 9. This song was also included on the promotional card-sleeve CD as track 6.
At the end of the track 8, four of the album's songs are played at once.
The "Reloaded" re-release features four of the five tracks from The True Human Design EP.