Periphery is an American progressive metal band formed in Washington, D.C., in 2005. Their musical style has been described as progressive metal, djent, and progressive metalcore. They are considered one of the pioneers of the djent movement within progressive metal. They have also received a Grammy nomination. The band consists of vocalist Spencer Sotelo, guitarists Misha Mansoor, Mark Holcomb, Jake Bowen, and drummer Matt Halpern.

Progressive metal is a broad fusion music genre melding heavy metal and progressive rock, combining the loud "aggression" and amplified guitar-driven sound of the former with the more experimental, cerebral or quasi-classical compositions of the latter.