Warzyn Kmiecy [ˈvaʐɨn ˈkmjɛt͡sɨ] is a village in the administrative district of Gmina Sierpc, within Sierpc County, Masovian Voivodeship, in east-central Poland. It lies approximately 13 kilometres (8 mi) south-east of Sierpc and 105 km (65 mi) north-west of Warsaw.