The Christian Democratic Union of Germany was an East German political party founded in 1945. It was part of the National Front with the Socialist Unity Party of Germany (SED) and a bloc party until 1989.

The National Front of the German Democratic Republic was officially an alliance of parties and mass organisations (1950–1990). In fact, only one party held power in the GDR, namely the communist SED. The National Front was an instrument to exercise control over the other parties and organisations. The precursor of the National Front was the Democratic Bloc.