Piersna [ˈpjɛrsna] is a village in the administrative district of Gmina Pęcław, within Głogów County, Lower Silesian Voivodeship, in south-western Poland.

It lies approximately 4 km (2 mi) south-east of Pęcław, 15 km (9 mi) east of Głogów, and 77 km (48 mi) north-west of the regional capital Wrocław.