Putnok is a town in Borsod-Abaúj-Zemplén county, Northern Hungary. It lies 40 km (25 mi) from Miskolc, between the Bükk Mountains and the river Sajó.

Borsod–Abaúj–Zemplén is an administrative county in north-eastern 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.