Wołczyn [ˈvɔu̯t͡ʂɨn] (German: Konstadt) is a town in Kluczbork County, Opole Voivodeship, southern Poland, with 5,907 inhabitants as of 2019[update].

In the early 14th-century Liber fundationis episcopatus Vratislaviensis the town appeared under the Latinized name Welczyn.

It remained under the rule of the Piast dynasty until 1495, and afterwards, for about 300 years, the town was owned by the magnate Posadowski family,[3] under the suzerainty of the Jagiellonian-ruled Bohemian (Czech) Kingdom until 1526, when the Habsburgs inherited the Bohemian Crown.

[3] Five annual fairs were held in Wołczyn, and crops and handicrafts were sold to customers not only from Silesia, but also from neighboring Greater Poland.

[3] In the final stages of World War II, on 19 January 1945, a German-organized death march of Allied prisoners of war from the Stalag Luft 7 POW camp passed through the town.