The Diocese of Eisenstadt (Latin: Dioecesis Sideropolitanus) is a Latin Church diocese of the Catholic Church located in the city of Eisenstadt in the ecclesiastical province of Vienna in Austria. The episcopal seat is in Eisenstadt Cathedral.

• May 18, 1922: Established as Apostolic Administration of Burgenland from the Diocese of Győr, Hungary and Diocese of Szombathely, Hungary
• August 15, 1960: Promoted to Diocese of Eisenstadt

• Minor Basilicas:
  • Basilica of Maria Loretto, Loretto, Burgenland
  • Church of the Ascension of the Blessed Virgin Mary (Mariä Himmelfahrt), Frauenkirchen, Burgenland

• Bishops of Eisenstadt (Roman rite)
  • Bishop Ägidius Zsifkovics (proclaimed 2010.07.09)
  • Bishop Paul Iby (1992.12.28 – 2010.07.09)
  • Bishop Štefan László (1960.08.15 – 1992.12.28)
• Apostolic Administrators of Burgenland (Roman rite)
  • Bishop Štefan László (1954.01.30 – 1960.08.15)
  • Archbishop Josef Schoiswohl (1949.11.11 – 1954.01.18)
  • Cardinal Theodor Innitzer (1932 – 1949.11.11)
  • Cardinal Friedrich Gustav Piffl, C.R.S.A. (1922 – 1932.04.21)

• Roman Catholicism in Austria
• List of Roman Catholic dioceses in Austria

• GCatholic.org
• Catholic Hierarchy
• Diocese website

47°50′43″N 16°31′30″E / 47.8452°N 16.5250°E / 47.8452; 16.5250