Johann Ernst von Thun und Hohenstein | |
|---|---|
| Prince-Archbishop of Salzburg | |
 Portrait as Archbishop, 1688 | |
| Church | Roman Catholic Church |
| Archdiocese | Salzburg |
| See | Cathedral of Saints Rupert and Vergilius |
| Installed | 24 November 1687 |
| Term ended | 20 April 1709 |
| Predecessor | Maximilian Gandolf von Kuenburg |
| Successor | Franz Anton von Harrach |
| Other post(s) | Bishop of Seckau |
| Personal details | |
| Born | 3 July 1643 |
| Died | 20 April 1709 (aged 65) Salzburg, Archbishopric of Salzburg, Holy Roman Empire |
| Nationality | Bohemian |
Johann Ernst Graf von Thun und Hohenstein (3 July 1643 – 20 April 1709) was Bishop of Seckau from 1679 to 1687 and Prince-archbishop of Salzburg from 1687 until his death.