|Countries||Czechia and Poland|
|Time zone||UTC+1 (CET)|
Opavian Silesia (Czech: Opavské Slezsko, Polish: ?l?sk Opawski or ?l?sk karniowsko-opawski, German: Troppauer Schlesien or Troppauer Land) is a historical subregion of Silesia (Upper Silesia) currently split between Poland and the Czech Republic.
The historical centre of the region is Opava (Polish: Opawa, German: Troppau) and the region mostly encompasses areas of the medieval Duchy of Opava. The Hlu?ín Region is located within Opavian Silesia.
After the First World War, most of Austrian Silesia (including Opavian Silesia) became a part of the newly formed Czechoslovakia. Hlu?ínsko, a part of Germany, became a part of Czechoslovakia on On February 4, 1920 without a referendum. This was largely due to the fact that most of the regions inhabitants spoke Czech. Leobschütz (Polish: G?ubczyce, Czech: Hlub?ice or Glub?ice), a town in northern Opavian Silesia, was supposed to come under the administration of Czechoslovakia if the rest of the Upper Silesian Plebiscite area fell to Poland. That however never happened, and after the Second World War Leobschütz/G?ubczyce found itself within Poland.