Upper Lusatia (German: Oberlausitz, pronounced [ˈoːbɐˌlaʊzɪts] ; Polish: Łużyce Górne or Milsko; Upper Sorbian: Hornja Łužica, pronounced [ˈhɔʁnʲa ˈwuʒitsa] ; Lower Sorbian: Górna Łužyca; Czech: Horní Lužice) is a historical region in Germany and Poland. Along with Lower Lusatia to the north, it makes up the region of Lusatia, named after the Slavic Lusici tribe. Both parts of Lusatia are home to the West Slavic minority group of the Sorbs.
The major part of Upper Lusatia is part of the German federal state of Saxony, roughly comprising Bautzen district and Görlitz district. The northwestern extremity, around Ruhland and Tettau, is incorporated into the Oberspreewald-Lausitz district of the state of Brandenburg. The eastern part of Upper Lusatia is in Poland, east of the Neisse (Nysa) river, in Lower Silesian Voivodeship. A small strip of land in the north around Łęknica is incorporated into Lubusz Voivodeship, along with the Polish part of Lower Lusatia.