Český Těšín District (, ) was a district (''

okres Okres (Czech language, Czech and Slovak language, Slovak term meaning "district" in English; from German Kreis - circle (or perimeter)) refers to administrative entities in the Czech Republic and Slovakia. It is similar to Landkreis in Germany or " ...

'') of

Czechoslovakia Czechoslovakia ( ; Czech language, Czech and , ''Česko-Slovensko'') was a landlocked country in Central Europe, created in 1918, when it declared its independence from Austria-Hungary. In 1938, after the Munich Agreement, the Sudetenland beca ...

existing between 1920–1938 and 1945–1960. Its administrative centre was the town of

Český Těšín Český Těšín (; ; ) is a town in Karviná District in the Moravian-Silesian Region of the Czech Republic. It has about 23,000 inhabitants. Český Těšín lies on the west bank of the Olza (river), Olza river, in the heart of the historical ...

. The district was formed after the division of

Cieszyn Silesia Cieszyn Silesia, Těšín Silesia or Teschen Silesia ( ; or ; or ) is a historical region in south-eastern Silesia, centered on the towns of Cieszyn and Český Těšín and bisected by the Olza River. Since 1920 it has been divided betwe ...

on 28 July 1920, which split the town of Teschen/Cieszyn/Těšín into

Cieszyn Cieszyn ( , ; ; ) is a border town in southern Poland on the east bank of the Olza River, and the administrative seat of Cieszyn County, Silesian Voivodeship. The town has 33,500 inhabitants ( and lies opposite Český Těšín in the Czech Repu ...

and Český Těšín as well as the preceding Teschen County originally formed in 1850 on the territory of

Austrian Silesia Austrian Silesia, officially the Duchy of Upper and Lower Silesia, was an autonomous region of the Kingdom of Bohemia and the Habsburg monarchy (from 1804 the Austrian Empire, and from 1867 the Cisleithanian portion of Austria-Hungary). It is la ...

. Following the

Munich Agreement The Munich Agreement was reached in Munich on 30 September 1938, by Nazi Germany, the United Kingdom, the French Third Republic, French Republic, and the Kingdom of Italy. The agreement provided for the Occupation of Czechoslovakia (1938–194 ...

, in November 1938 together with the

Trans-Olza Trans-Olza (, ; , ''Záolší''; ), also known as Trans-Olza Silesia (), is a territory in the Czech Republic which was disputed between Poland and Czechoslovakia during the Interwar Period. Its name comes from the Olza River. The history of ...

region it was annexed by

Poland Poland, officially the Republic of Poland, is a country in Central Europe. It extends from the Baltic Sea in the north to the Sudetes and Carpathian Mountains in the south, bordered by Lithuania and Russia to the northeast, Belarus and Ukrai ...

. The Český Těšín District was administratively transformed to a short-lived Cieszyn Zachodni County and afterwards it was merged with Cieszyn County of

Silesian Voivodeship Silesian Voivodeship ( ) is an administrative province in southern Poland. With over 4.2 million residents and an area of 12,300 square kilometers, it is the second-most populous, and the most-densely populated and most-urbanized region of Poland ...

. The area was then annexed by

Nazi Germany Nazi Germany, officially known as the German Reich and later the Greater German Reich, was the German Reich, German state between 1933 and 1945, when Adolf Hitler and the Nazi Party controlled the country, transforming it into a Totalit ...

at the beginning of

World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...

. After the war it was restored to

. Český Těšín District ceased to exist as a result of a reform act issued on 9 April 1960 and was succeeded mostly by the

Frýdek-Místek District Frýdek-Místek District () is a district in the Moravian-Silesian Region of the Czech Republic. Its capital is the city of Frýdek-Místek. Administrative division Frýdek-Místek District is divided into four administrative districts of munici ...

, with some municipalities including Český Těšín transferred to the

Karviná District Karviná District () is a Okres, district in the Moravian-Silesian Region of the Czech Republic. Its capital is the city of Karviná, but the most populated city is Havířov. Administrative division Karviná District is divided into five Distric ...

.Zákon ze dne 9. dubna 1960 o územním členění státu. (36/1960 Sb.)
/ref> The territory of the district was in large part inhabited by the Polish minority. Český Těšín District covered the exact southern part of Trans-Olza 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 Trans-Olza.

References

Districts of the Czech Republic {{CzechRepublic-hist-stub