Leśnica [lɛɕˈɲit͡sa] (German: Leschnitz, 1936-45 Bergstadt) is a town in Poland. Since 1999 it has been in Strzelce Opolskie County in Opole Voivodship.
The oldest known mention of Leśnica comes from a 1217 document of Duke Casimir I of Opole. Its name is derived from the Polish word las ("forest"). The town was part of the Duchy of Opole of fragmented Poland, and remained ruled by the Piast dynasty until 1532. The town was destroyed in 1429 during the Hussite Wars. In 1532 incorporated into the Bohemian Crown Lands, in 1645 it passed to the Poles again under the House of Vasa, and in 1666 it fell back to Bohemia.
Under the Germanized name Leschnitz, it was annexed by the Kingdom of Prussia in 1742 during the First Silesian War. The town was included in Landkreis Groß Strehlitz within the Prussian Province of Silesia in 1816. Leschnitz became part of the German Empire in 1871 during the unification of Germany. During the Nazi campaign of renaming of placenames, in 1936 while part of the Province of Upper Silesia, it was renamed Bergstadt ("mountain town") to remove traces of Polish origin. In 1945 it was placed under Polish administration according to the Potsdam Agreement and the historic name Leśnica was restored. Due to fact that no less than 20% of its population belongs to the German minority in Poland, the town uses bilingual Polish and German signs and language – Polish remains official, German is the language of "assistance".
Theodor Aufrecht (1822–1907), Indologist and Sanskritist
Falk Valentin Grünfeld (1837–1897), textile merchant and retailer
Joseph Glowatzki (1847–1936), Catholic clergyman
Bruno Schindler (1882–1964), Sinologist
Eugen Piwowarsky (1891–1953), German material scientist and metallurgist
Gerhard Schaffran (1912–1996), Catholic Bishop of Dresden-Meißen
Hans Lipinsky-Gottersdorf (1920–1991), German writer