Modrzew [ˈmɔdʐɛf] is a village in the administrative district of Gmina Zbuczyn, within Siedlce County, Masovian Voivodeship, in east-central Poland. It lies approximately 8 kilometres (5 mi) north-east of Zbuczyn, 19 km (12 mi) east of Siedlce, and 106 km (66 mi) east of Warsaw.