Vein is a hardcore punk band from Boston, Massachusetts that formed in 2013. In 2017 the band was signed onto Closed Casket Activities, who would issue their first full-length work Errorzone to warm reception among critics, even appearing on Revolvers early “Best Albums of 2018” list.

Vein have been categorized as hardcore punk, nu metalcore and mathcore. They take influence from styles such as screamo, mathcore, drum and bass, nu metal, and horror soundtracks to films and games, with Errorzone especially noted for its nu metal influenced sound.