Gmina Dydnia is a rural gmina (administrative district) in Brzozów County, Subcarpathian Voivodeship, in south-eastern Poland. Its seat is the village of Dydnia, which lies approximately east of Brzozów and south of the regional capital Rzeszów.
The gmina covers an area of , and as of 2006 its total population is 8,222.
Gmina Dydnia contains the villages and settlements of Dydnia, Grabówka, Jabà Âonica Ruska, Jabà Âonka, Koà Âskie, Krzemienna, Krzywe, Niebocko, Niewistka, Obarzym, Temeszów, Ulucz, Witryà Âów and Wydrna.
Gmina Dydnia is bordered by the gminas of Bircza, Brzozów, Nozdrzec and Sanok.
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