Caraș-Severin is a county (județ) of Romania on the border with Serbia. The majority of its territory lies within the historical region of Banat, with a few northeastern villages considered part of Transylvania. The county seat is Reșița. The Caraș-Severin county is part of the Danube–Criș–Mureș–Tisa Euroregion.

Banat is a geographical and historical region located in the Pannonian Basin that straddles Central and Eastern Europe. It is currently divided among three countries: the eastern part lies in western Romania ; the western part of Banat is in northeastern Serbia ; and a small northern part lies within southeastern Hungary.