Zalesice-Kolonia [zalɛˈɕit͡sɛ kɔˈlɔɲa] is a village in the administrative district of Gmina Sulejów, within Piotrków County, Łódź Voivodeship, in central Poland. It lies approximately 12 kilometres (7 mi) west of Sulejów, 5 km (3 mi) south-east of Piotrków Trybunalski, and 50 km (31 mi) south of the regional capital Łódź.