Mark Tornillo (born June 8, 1954) is an American singer and songwriter best known for serving as the frontman of heavy metal band Accept.

He also became the main lyricist of Accept, replacing the band's long-time manager Gaby Hoffmann.

[1] His both grandfathers were musicians and because of that he had musical training since young age, including classical piano lessons for nine years.

[3] The band arose from the fertile club scene in Tornillo's native New Jersey and picked up enough of a following to successfully tour across the state as well as play in New York.

Quick folded around the turn of the millennium, it eventually reunited in May 2013 at a Rock N' Roll Heaven and the Old Bridge Metal Militia's concert serving as a charity fundraiser, helping the victims of Superstorm Sandy.

He concluded that "even the lapsed, Balls to the Wall-era metalheads out there will feel as though they're picking up with the band right where they left off.

"[7] Tornillo has appeared on six studio albums with the band to date: Blood of the Nations (2010), Stalingrad (2012), Blind Rage (2014), The Rise of Chaos (2017), Too Mean to Die (2021) and Humanoid (2024).

[9] Tornillo is the singer in a cover band Gotham with Paul Crook (ex-Meat Loaf) who play artists like Marilyn Manson, Rob Zombie and Korn and also make classic rock/industrial mash-ups.