"Tessellate" is a song by English indie rock band alt-J from their debut studio album, An Awesome Wave (2012). The song was written by Joe Newman, Gus Unger-Hamilton, Gwilym Sainsbury and Thom Green and produced by Charlie Andrew. It was originally released on 13 October 2011 as a double A-side single with “Bloodflood”, before being released separately on 13 July 2012 as the album's third single.

Alt-J are an English indie rock band formed in 2007 in Leeds. Their lineup includes Joe Newman, Thom Sonny Green (drums), Gus Unger-Hamilton (keyboards/vocals), and formerly Gwil Sainsbury (guitar/bass).