Jasieniec Iłżecki Dolny [jaˈɕɛɲɛt͡s iu̯ˈʐɛt͡ski ˈdɔlnɨ] is a village in the administrative district of Gmina Iłża, within Radom County, Masovian Voivodeship, in east-central Poland. It lies approximately 9 kilometres (6 mi) south-west of Iłża, 33 km (21 mi) south of Radom, and 124 km (77 mi) south of Warsaw.