Heavy Rocks is the sixteenth studio album by the Japanese experimental band Boris. The album was released on May 24, 2011, through the label Sargent House.[11] It is the second of three Boris albums of this title, with the others being released in 2002 and 2022; all feature the band exploring hard rock and heavy metal sounds.[12] The band repeated the album title for this release because they "seek to redefine 'heavy' music in a culmination of the band's tireless efforts over the past two decades".[13]
The album was released on the same day as Attention Please, with which it shares the track "Aileron."[14] It also shares different mixes of the songs "Jackson Head" and "Tu, La La" with New Album.