Dio was the band fronted by Ronnie James Dio that released Holy Diver.
Holy Diver was Dio’s debut studio album, released in 1983 after Ronnie James Dio left Black Sabbath. The band was formed around his distinctive vocals and songwriting, with Vivian Campbell on guitar, Jimmy Bain on bass, and Vinny Appice on drums.
Recorded at Sound City in Van Nuys, California, the album became Dio’s most successful release. Its songs include “Holy Diver,” “Rainbow in the Dark,” and “Stand Up and Shout,” all of which helped establish the group as a major 1980s heavy-metal act.
The main mix-up is with Black Sabbath, Rainbow, and Heaven & Hell—bands Dio also fronted at different points. He sang for Rainbow before joining Black Sabbath, and later reunited with Black Sabbath musicians in Heaven & Hell. Holy Diver, however, belongs specifically to the band named Dio.