Karwiniec [karˈviɲɛt͡s] is a village in the administrative district of Gmina Bierutów, within Oleśnica County, Lower Silesian Voivodeship, in south-western Poland.

It lies approximately 3 kilometres (2 mi) south of Bierutów, 15 kilometres (9 mi) south-east of Oleśnica, and 36 kilometres (22 mi) east of the regional capital Wrocław.