Stronie Śląskie [ˈstrɔɲɛ ˈɕlɔ̃skʲɛ] (German: Seitenberg) is a town in Kłodzko County, Lower Silesian Voivodeship, in south-western Poland.

[2] In the 18th century, Austria ceded the village to the Kingdom of Prussia in the Treaty of Berlin.

In 1838, Princess Marianne of the Netherlands bought the estates, which remained in the possession of the Dutch House of Orange-Nassau until 1908.

[2] After the defeat of Nazi Germany in World War II in 1945, the village became part of Poland.

[3] One of the main employers in the town in the lead crystal factory "Violetta.