Konrad I of Oleśnica was a Duke of Żagań and Ścinawa during 1309–1312, Duke of Oleśnica, Namysłów, Gniezno and Kalisz during 1312–1313, Duke of Kalisz during 1313–1314 (alone), Duke of Namysłów from 1313 (alone) and Duke of Oleśnica from 1321 until his death (alone).

Oleśnica is a town in Lower Silesian Voivodeship, in south-western Poland, within the Wrocław metropolitan area. It is the administrative seat of Oleśnica County and also of the rural district of Gmina Oleśnica, although it is not part of the territory of the latter, the town being an urban gmina in its own right.