Johann Ernst Graf von Thun und Hohenstein was Bishop of Seckau from 1679 to 1687 and Prince-archbishop of Salzburg from 1687 until his death.
- Occupation
- Catholic priest, Catholic bishop
- Position held
- Q314626, Catholic archbishop, diocesan bishop, vicar general
- Citizenship
- Austrian Empire
- Born
- July 6, 1643, July 3, 1643
- Died
- April 20, 1709