Kiełczyn [ˈkʲɛu̯t͡ʂɨn] is a village in the administrative district of Gmina Dzierżoniów, within Dzierżoniów County, Lower Silesian Voivodeship, in south-western Poland. Prior to 1945 it was in Germany.

It lies approximately 13 km (8 mi) north-east of Dzierżoniów, and 45 km (28 mi) south-west of the regional capital Wrocław.