Mike DiMeo, born November 29 1968 in New York, U.S., is a hard rock/heavy metal vocalist, best known for his work in the band Riot, which he left in late 2006. He recorded six studio albums and one live album with the group before departing to join Masterplan for the recording of MK II in 2006. It was the only album he recorded with Masterplan.

He is also credited as a Keyboard player for Johnny Winter and other artists.