Sieniawka [ɕɛˈɲafka] is a village in the administrative district of Gmina Łagiewniki, within Dzierżoniów County, Lower Silesian Voivodeship, in south-western Poland. The Sieniawka Lake is located close to the village. Its tank is about 300 meters long and has retention and leisure functions. The lake is used as a recreation center (sandbeach, swimming, beach volley, small catering and campsite).