Roman Catholic Diocese of Vác

Diocese of Vác Dioecesis Vaciensis Váci Egyházmegye
The Cathedral of the Assumption and St Michael
Location
Country	Hungary
Ecclesiastical province	Eger
Metropolitan	Archdiocese of Eger
Statistics
Area	8,800 km2 (3,400 sq mi)
Population - Total - Catholics	(as of 2014) 1,116,000 640,000 (57.3%)
Parishes	220
Information
Denomination	Roman Catholic
Sui iuris church	Latin Church
Rite	Latin Rite
Established	11th century
Cathedral	The Cathedral of the Assumption and St Michael in Vác
Patron saint	St Michael St Stephen I
Current leadership
Pope	Francis
Bishop	Miklós Beer
Metropolitan Archbishop	Csaba Ternyák
Auxiliary Bishops	Lajos Varga
Map
Map of the Diocese
Website
Website of the Diocese

The Roman Catholic diocese of Vác, (Latin: Dioecesis Vaciensis) is a diocese of the Latin Rite of the Roman Catholic church in Hungary. The diocese was created in 1008 by St. Stephen, the first King of Hungary. Originally known as the diocese of Waitzen in German, it is a suffragan of the Archdiocese of Eger. The current bishop is Miklós Beer who was appointed in 2003.

Its first bishops were Clement, Lazarus, and Aaron. Lazarus is believed to have been bishop from 1075–77; Stephen was known to have been bishop in 1102. Beginning with Marcellus (1105–19), the series of bishops is uninterrupted. Particularly notable early bishops of Vác include: Johannes de Surdis (1363–73), ambassador of King Louis I to Italy in 1369, later on Archbishop of Esztergom; Vincent Szilassy (1450–73), a member of the embassy which brought the newly elected King Matthias Corvinus from Prague to Vác; Wladislaw Szalkai (1514–23), chancellor of King Louis II and afterwards Archbishop of Esztergom; Martinus Pethe (1582–86), transferred to Kalocsa.

Later important bishops include Sigismund Kolonits (1709–16), transferred to Vienna, and first Archbishop of Vienna; Count Michael Friedrich von Althann (1718–34), sent as viceroy to Sicily by Emperor Charles VI, and afterwards cardinal; Count Christopher Migazzi, cardinal and Archbishop of Vienna, twice Bishop of Vác (1756–57); 1762–82); Augustinus Roskoványi (1851–59), an eminent theological writer, transferred to Nyitra in 1859. Roskoványi was succeeded by Anthony Peitler, 1859–85, who founded the library at Vác. In 1900 Count Charles Csáky became bishop.