The Duchy of Oświęcim, or the Duchy of Auschwitz, is one of many Duchies of Silesia, formed in the aftermath of the fragmentation of Poland.It is established about 1315 on the Lesser Polish lands east of the Biała river held by the Silesian branch of the Polish royal Piast dynasty.
Briefly semiautonomous, with its capital in Oświęcim, it s finally sold to the Kingdom of Poland in 1457.
Annexed by the Habsburg Empire in 1772, the remaining ducal title ceases to exist in 1918 with the lands being reincorporated into the Second Polish Republic.
