Josef Duchač (born February 19, 1938) is a German politician (CDU).

The studied chemical engineer became a member of the East German Christian Democratic Union in 1957.

After the party merged with the West German CDU following the German reunification, he was elected Thuringia's first post-reunification minister-president on October 14, 1990.

On January 23, 1992, he announced his resignation because of alleged Stasi contacts[1] and was succeeded by Bernhard Vogel on February 5, 1992.

This biography article about a member of the Christian Democratic Union of Germany (CDU) is a stub.