Modrzewek (Polish pronunciation: [mɔdˈʐɛvɛk]) is a village in the administrative district of Gmina Opoczno, within Opoczno County, Łódź Voivodeship, in central Poland. It lies approximately 9 kilometres (6 miles) north-west of Opoczno and 64 km (40 mi) south-east of the regional capital Łódź.