Jack Grisham (born July 22, 1961) is an American rock vocalist, musician, raconteur and political activist from Southern California. He is the vocalist for the punk rock band T.S.O.L. (True Sounds of Liberty), which emerged from the late 1970s Los Angeles hardcore punk rock scene, along with Black Flag, Circle Jerks and Bad Religion. Grisham has also fronted the bands Vicious Circle, the Joykiller, Tender Fury and Cathedral of Tears. He records with T.S.O.L., the Joykiller and the Manic Low.