Heavy Metal bend osnovan 1982.Poslije odlaska iz Black Sabbatha Ronnie James Dio sa kolegom iz istoimenog benda bubnjarom Vinny Appiceom osniva svoj bend pod imenom "DIO"
diskografija
Holy Diver (1983)
The Last in Line (1984)
Sacred Heart (1985)
Intermission (1986)
Dream Evil (1987)
Lock up the Wolves (1990)
Strange Highways (1994)
Diamonds The Best of Dio (1995)
Angry Machines (1996)
Inferno - Last in Live (1998)
Magica (2000)
Killing the Dragon (2002)
Stand Up and Shout: The Dio Anthology (2003)
Master of the Moon (2004)
Evil or Divine - Live In New York City (2005)
Holy Diver - Live (2006)