Rolo Tomassi are a British mathcore band formed in Sheffield in 2005. Their name is a reference to dialogue from the film L.A. Confidential. The band are known for their chaotic style and performances, and strong DIY ethic. They are currently signed to MNRK Heavy.

The band released two albums on Hassle Records: Hysterics (2008) and the Diplo-produced Cosmology (2010). After creating their own record label in 2011 called Destination Moon, they released Eternal Youth, a compilation album of B-sides, remixes and rarities from throughout their career, and their third album Astraea, in 2012 with the first line-up change in their career. They then released two albums on Holy Roar Records: Grievances (2015) and Time Will Die and Love Will Bury It (2018), before moving to their current label to release their sixth album, Where Myth Becomes Memory (2022).