Dio may refer to: Given name Dio or Dion, masculine given name Dio of Alexandria, Greek philosopher and ambassador (1st century BC) Dio Chrysostom, Roman philosopher (AD 40–120) Cassius Dio, Roman historian (AD 160–230) Cassius Dio (consul 291) Dio Lequaglie (born 1963), Italian beach volleyball player Surname Ronnie James Dio (1942–2010), American heavy metal singer Johnny Dio (1914–1979), Italian American mobster Places Dio, Burkina Faso Diö, a small village in southern Sweden Dio-et-Valquières, France Dio-Gare, Mali Diu, India, formerly known as Dio Music Dio (band), an American heavy metal band Dio - Distraught Overlord, a Japanese heavy metal band "Dio" (song), a song by Tenacious D on the 2001 eponymous album Dio (album), an album by Jørn Lande "Dio", a song from the Throwing Muses album Red Heaven Abbreviations Days Inventory Outstanding Diocesan Boys' School, Hong Kong Diocesan Girls' School, Hong Kong St. John's Diocesan Girls' Higher Secondary School, India Diocesan School for Girls (Auckland), New Zealand Defence Intelligence Organisation, Australian military intelligence agency Defense Industries Organization, conglomerate of companies run by the Islamic Republic of Iran Defence Infrastructure Organisation, an operating arm of the UK Ministry of Defence Diet-induced obesity model (DIO model), an animal model used in laboratory research Digital Input/Output Other uses the Italian word for God Dio Brando, a fictional character and the main antagonist from the manga and anime series JoJo's Bizarre Adventure known simply as DIO Honda Dio, motorscooter produced in India Radio Dio, an independent radio station, broadcasting to the French city of Saint-Etienne Dio Eraclea, character from the anime Last Exile as well as its sequel Last Exile: Fam, The Silver Wing See also Dion (disambiguation) Dios (disambiguation) D10 (disambiguation) Diou (disambiguation) Deo (disambiguation)