Szadek [ˈʂadɛk] is a town in Zduńska Wola County, Łódź Voivodeship, Poland, with 1,898 inhabitants (2020).

It was a county seat and royal town of the Polish Crown, administratively located in the Sieradz Voivodeship in the Greater Poland Province.

[3] During the joint German-Soviet invasion of Poland, which started World War II in September 1939, the town was captured by German forces.

In 1940, the Germans expelled 102 Poles, who were then detained in a transit camp in Łódź and either deported to forced labour in Germany or deported in freight trains to the General Government in the more-eastern part of German-occupied Poland, while their homes were handed over to German colonists as part of the Lebensraum policy.

[5] In 1940, the 410 Jews remaining in the town were given three hours notice that they were to move to a ghetto where they lived in poverty and with terrible hygienic conditions.