Big Business is a hard rock band currently signed to Hydra Head Records. Originally from the Seattle area, the band relocated to Los Angeles in February, 2006.

Big Business is a three piece band composed of Jarred Warren of Karp, The Whip and Tight Bros From Way Back When, Coady Willis of The Murder City Devils and Dead Low Tide, and, as of early 2008, Toshi Kasai.

In 2006, Jarred and Coady were asked to join the Melvins who were once again without a bass player after Kevin Rutmanis had been added to the bassist morgue. They recorded A Senile Animal in July 2006, and started a U.S. tour in September with Big Business, among others, opening up. During these shows they were sometimes joined by Melvins drummer Dale Crover on guitar.

Early 2007 saw the release of Big Business's second full length album Here Come The Waterworks, again on Hydra Head. The album was recorded in Seattle, shortly after they had finished the recordings for A Senile Animal with the Melvins. David Scott Stone - a musician who has often played and recorded with the Melvins - contributes guitar and moog synthesizer on the album.

In 2008 Melvins released a new album, Nude withBoots, which features Jarred and Coady as part of the band again. Melvins are currently on tour supporting the Nude with Boots, with Big Business opening for them.