Český Těšín District (Czech: Okres Český Těšín, Polish: Powiat Czeski Cieszyn) was a district (okres) of Czechoslovakia existing between 1920–1938 and 1945–1960. Its administrative center was the city of Český Těšín. The territory of the district was in large part inhabited by the Polish minority. Český Těšín District covered the exact southern part of Zaolzie area and Poles were proportionately more numerous there than in the newly gerrymandered Frýdek-Místek District, which also encompasses the ethnically pure Czech areas west of Zaolzie.