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Zygmunt Muchniewski (30 July 1896 – 5 January 1979) was a Polish politician who headed the Christian Democratic Party and was the prime minister of the Polish Government in Exile from 16 July 1970 to 13 July 1972.

Preceded byAleksander Zawisza Prime Minister of the Polish Republic in Exile 1970–1972 Succeeded byAlfred Urbański