Siedlec [ˈɕɛdlɛt͡s] is a village in the administrative district of Gmina Trzebiel, within Żary County, Lubusz Voivodeship, in western Poland, close to the German border. It lies approximately 5 kilometres (3 mi) south-west of Trzebiel, 26 km (16 mi) west of Żary, and 63 km (39 mi) south-west of Zielona Góra.