Gągolin [ɡɔnˈɡɔlin] is a village in the administrative district of Gmina Łoniów, within Sandomierz County, Świętokrzyskie Voivodeship, in south-central Poland. It lies approximately 7 kilometres (4.3 mi) south-east of Łoniów, 23 km (14.3 mi) south-west of Sandomierz, and 79 km (49.1 mi) south-east of the regional capital Kielce.