Zieleniec [ʑɛˈlɛɲɛt͡s] is a village in the administrative district of Gmina Jasień, within Żary County, Lubusz Voivodeship, in western Poland.

It lies approximately 5 kilometres (3 mi) south-west of Jasień, 14 km (9 mi) north-west of Żary, and 44 km (27 mi) south-west of Zielona Góra.