Siedlec [ˈɕɛdlɛt͡s] is a village in the administrative district of Gmina Mstów, within Częstochowa County, Silesian Voivodeship, in southern Poland. It lies approximately 3 kilometres (2 mi) south-west of Mstów, 10 km (6 mi) east of Częstochowa, and 66 km (41 mi) north of the regional capital Katowice.