Dio and his first wife, Loretta Berardi (born 1941), adopted a son, novelist Dan Padavona.

After divorcing Berardi, in 1978 he married Wendy Gaxiola (born 1945) who also served as his manager.
In the 1980s, she managed the Los Angeles rock bands Rough Cutt, NuHaven, Cold Sweat and Hellion.
They divorced around 1985, although Wendy remained his manager as well as his friend during all of Dio's career.

Dio was of below average height, standing at only 5 ft 4 in (1.63 m) tall.

In September 2003, he accidentally severed his thumb during a gardening accident when a heavy garden gnome fell onto it.
Dio was concerned he would no longer be able to do his signature metal horns hand gesture, but a doctor managed to re-attach it.
Dio and his first wife, Loretta Berardi (born 1941), adopted a son, novelist Dan Padavona.
After divorcing Berardi, in 1978 he married Wendy Gaxiola (born 1945) who also served as his manager. In the 1980s, she managed the Los Angeles rock bands Rough Cutt, NuHaven, Cold Sweat and Hellion. They divorced around 1985, although Wendy remained his manager as well as his friend during all of Dio's career.
Dio was of below average height, standing at only 5 ft 4 in (1.63 m) tall.
In September 2003, he accidentally severed his thumb during a gardening accident when a heavy garden gnome fell onto it. Dio was concerned he would no longer be able to do his signature metal horns hand gesture, but a doctor managed to re-attach it.
Ronnie James Dio