Jasieniec [jaˈɕɛɲɛt͡s] is a village in Grójec County, Masovian Voivodeship, in east-central Poland. It is the seat of the gmina (administrative district) called Gmina Jasieniec. It lies approximately 6 kilometres (4 mi) south-east of Grójec and 43 km (27 mi) south of Warsaw.