Gadka (Polish pronunciation: [ˈɡatka]) is a village in the administrative district of Gmina Mirzec, within Starachowice County, Świętokrzyskie Voivodeship, in south-central Poland. It lies approximately 4 kilometres (2 mi) west of Mirzec, 11 km (7 mi) north-west of Starachowice, and 40 km (25 mi) north-east of the regional capital Kielce.