Mark Tornillo (born June 8, 1954) is an American heavy metal singer and songwriter best known as the powerful frontman of the legendary German band Accept. Hailing from Brielle, New Jersey, Tornillo joined Accept in 2009, bringing a fresh yet authentic energy that revitalized the band's signature sound. With classical piano training from a young age and roots in the New Jersey rock scene, he was previously the lead vocalist of the local metal band T.T. Quick.
Tornillo has been praised for his strong vocal style and ability to honor Accept's classic hits while pushing the band into new creative territory. Since joining Accept, he has recorded six studio albums and continues to be a defining voice in modern heavy metal. His journey from union electrician to metal frontman is a testament to his passion and dedication to music.