Sonic Syndicate was a Swedish metalcore band from Falkenberg. They were originally influenced by Swedish melodic death metal bands such as In Flames and Soilwork, as well as American metalcore bands like Killswitch Engage and All That Remains.

The band was founded in 2002 by brothers and songwriters Richard and Roger Sjunnesson (death growl vocals and guitars respectively), with their younger cousin Robin Sjunnesson (guitars) under the name Fallen Angels. They switched to Sonic Syndicate in 2005. The "classic" lineup from 2006 to 2009 included the Sjunnessons with Roland Johansson (clean vocals), Karin Axelsson (bass) and John Bengtsson (drums). Today, the band consists of Robin (now the only original member) alongside British singer Nathan J. Biggs and bass player Michel Bärzén. Since their fourth album We Rule the Night, their sound has slowly shifted away from metal and toward a pop rock style. The band ceased to perform live or release new music by 2018 and has since been on hiatus.