Ad·ver·sary is the name of an Canadian industrial band. With output ranging from ambient to rhythmic noise and industrial rock, Ad·ver·sary has joined several well-known acts on tours of the United States and Canada, including Iszoloscope, Terrorfakt, Antigen Shift, DJ leslie and Adam X. Their remix work includes material from Iszoloscope, Converter (band), Cyanotic and Urusai.