Twardogóra [] (Festenberg) is a town in Oleśnica County, Lower Silesian Voivodeship, in south-western Poland. It is the seat of the administrative district (gmina) called Gmina Twardogóra. Prior to 1945 it was in Germany. (For more information on the history of the region, see Silesia.)
It lies approximately north of Oleśnica, and north-east of the regional capital Wrocław.
As at 2006, the town has a population of 6,866.