Racibórz is a city in Silesian Voivodeship in southern Poland.
With Opole, Racibórz is one of the historic capitals of Upper Silesia, being the residence of the Dukes of Racibórz from 1172 to 1521.
The city is situated in the southwest of the voivodeship on the upper Oder river, near the border with the Polish Opole Voivodeship and the Czech Republic. The Racibórz Basin (Kotlina Raciborska) forms the southeastern extension of the Silesian Lowlands, surrounded by the Opawskie Mountains in the west (part of the Eastern Sudetes), the Silesian Upland in the north, and the Moravian Gate in the south.
The town is one of the oldest in Upper Silesia, the site of a hill fort where the old trade route from the Moravian Gate down to Kraków crossed the Oder river. The name Racibórz is of Slavic origin and probably is derived from the name of one Duke Racibor, the city's founder.
As of 2019, the city has a population of approximately 55,000 inhabitants.