Kolonia Olszowiec [kɔˈlɔɲa ɔlˈʂɔvjɛt͡s] is a village in the administrative district of Gmina Kamieńsk, within Radomsko County, Łódź Voivodeship, in central Poland. It lies approximately 2 kilometres (1 mi) east of Kamieńsk, 16 km (10 mi) north of Radomsko, and 66 km (41 mi) south of the regional capital Łódź.