Johann Friedrich Karl von Ostein
Johann Friedrich Karl von Ostein | |
|---|---|
| Archbishop of Mainz | |
Portrait by Heinrich Carl Brandt | |
| Church | Catholic Church |
| Diocese | Electorate of Mainz |
| In office | 1743–1763 |
| Personal details | |
| Born | 6 July 1689 |
| Died | 4 June 1763 (aged 73) |
Johann Friedrich Karl von Ostein (6 July 1689 – 4 June 1763) was the Archbishop of Mainz, Elector of Mainz and Prince-Bishop of Worms.