Olszyna [ɔlˈʂɨna] (German: Langenöls) is a town in Lubań County, Lower Silesian Voivodeship, in south-western Poland.

Its name means "alder wood" in Polish.

A settlement dating back to the Middle Ages, it received its town charter in 2005.

It lies approximately 9 kilometres (6 mi) south-east of Lubań, and 116 kilometres (72 mi) west of the regional capital Wrocław.

This Lubań County location article is a stub.