Borki-Kosiorki [ˈbɔrki kɔˈɕɔrki] is a village in the administrative district of Gmina Wiśniew, within Siedlce County, Masovian Voivodeship, in east-central Poland. It lies approximately 4 kilometres (2 mi) north-east of Wiśniew, 8 km (5 mi) south-east of Siedlce, and 92 km (57 mi) east of Warsaw.