Mike DiMeo (born November 29, 1968) is an American hard rock/heavy metal vocalist, best known for his work in the band Riot, which he left in late 2006.

It features performances by a number of guest musicians, including Eric Clapton, Dr. John, Billy Gibbons from ZZ Top, Joe Perry from Aerosmith, and Brian Setzer from the Stray Cats.

DiMeo was the keyboard player and vocalist for UFO guitarist Vinnie Moore during his 2010 European solo band tour.

Other performances with Moore have since included New York City's legendary jazz club The Iridium, and the 2012 NAMM Show in Anaheim, CA and The Monsters of Rock Cruise in 2016.

[5] DiMeo played Hammond Organ on Science Fiction, the fifth studio album by American rock band Brand New.

The album's title and track listing were officially revealed on August 17, 2017, after several weeks of speculation, hints and leaks with its physical release on October 20, 2017.

DiMeo has done several North American tours playing keyboards for Bonnie Tyler whose hits include "It's a Heartache" and "Total Eclipse of the Heart".

Australian power metal band Ilium released their album, Ageless Decay in June 2009[9] featuring DiMeo on vocals.

[10] In 2010, DiMeo appeared on debut album Tears of white roses of Czech melodic power metal band Sebastien, released on November 19 via Escape Music.