Johann Friedrich Karl von Ostein

Johann Friedrich Karl von Ostein
Archbishop of Mainz
ChurchCatholic Church
DioceseElectorate of Mainz
In office1743–1763
Personal details
Born6 July 1689
Died4 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.