Borsod-Abaúj-Zemplén (; ) is the name of an administrative county (comitatus or megye) in north-eastern Hungary (commonly called "Northern Hungary"), on the border with Slovakia. It shares borders with the Hungarian counties Nógrád, Heves, Hajdú-Bihar and Szabolcs-Szatmár-Bereg. The capital of Borsod-Abaúj-Zemplén county is Miskolc. Of the seven statistical regions of Hungary it belongs to the region Northern Hungary.