|Coordinates: 50°55′N 15°24′E / 50.917°N 15.400°E|
|Highest elevation||600 m (2,000 ft)|
|Lowest elevation||420 m (1,380 ft)|
Gierczyn [ˈɡʲɛrt͡ʂɨn] (German: Giehren) is a village in the administrative district of Gmina Mirsk, within Lwówek Śląski County, Lower Silesian Voivodeship, in south-western Poland, close to the Czech border. It lies approximately 6 kilometres (4 mi) south of Mirsk, 26 km (16 mi) south-west of Lwówek Śląski, and 118 km (73 mi) west of the regional capital Wrocław.
Prior to 1945 it was in Germany. After World War II the region was placed under Polish administration and ethnically cleansed according to the post-war Potsdam Agreement. The native German populace was expelled and replaced with Poles.
The village has a population of 300.
- Birecki T., 1959, "Złoże cyny w Przecznicy (Dolny Śląsk)." [Lode Of Tin Ore In Przecznica (Lower Silesia)]; in: Zeszyty Naukowe AGH, № 22, Geologia vol.3, pp. 35-53, Kraków (in Polish)