Kępiaste [kɛmˈpjastɛ] is a village in the administrative district of Gmina Leszno, within Warsaw West County, Masovian Voivodeship, in east-central Poland. It lies approximately 3 kilometres (2 mi) north-east of Leszno, 15 km (9 mi) north-west of Ożarów Mazowiecki (the county seat), and 28 km (17 mi) west of Warsaw.