Dydnia [ˈdɨdɲa] is a village in Brzozów County, Subcarpathian Voivodeship, in southeastern Poland. It is the seat of the gmina (administrative district) called Gmina Dydnia. It lies approximately 11 kilometres (7 mi) east of Brzozów and 40 km (25 mi) south of the regional capital Rzeszów.

As of 2015, the village had a population of 1,600 inhabitants.