"Sulfur" is the fourth single from American heavy metal band Slipknot's fourth album All Hope Is Gone. The single was released on June 15, 2009,[4] after a video was released on April 18, 2009. This was the last Slipknot video to feature their full original lineup with both bassist Paul Gray, who died the next year, and also the final appearance from Joey Jordison who was fired from the band four years later, before his death in July 2021. "Sulfur", "Duality" and "Psychosocial" became downloadable content in Rock Band on December 8, 2009.