Kingdom of Sorrow is an American sludge metal band that features Kirk Windstein of Crowbar and Down, along with Jamey Jasta of Hatebreed.

James Shanahan, known professionally as Jamey Jasta, is an American vocalist, best known as the lead singer of metalcore band Hatebreed and sludge metal band Kingdom of Sorrow. Jasta also fronts metalcore band Icepick. Prior to Hatebreed, he fronted the hardcore band Jasta 14.