The Duchy of Racibórz was a historical principality located in present-day Poland. It emerged in the 13th century as part of the Silesian region and was ruled by various members of the Piast dynasty. The duchy played a significant role in the political landscape of Silesia during the Middle Ages. In 1521, the Duchy of Racibórz was incorporated into the Crown of Bohemia, which later became part of the Austrian Empire. The duchy experienced various territorial changes over the centuries, particularly during the Silesian Wars, and eventually became part of modern Poland after World War I.