Kępa Nagnajewska [ˈkɛmpa naɡnaˈjɛfska] is a village in the administrative district of Gmina Łoniów, within Sandomierz County, Świętokrzyskie Voivodeship, in south-central Poland. It lies approximately 8 kilometres (5 mi) south-east of Łoniów, 20 km (12 mi) south-west of Sandomierz, and 81 km (50 mi) south-east of the regional capital Kielce.