Sajószentpéter (German: Sankt Peter; Latin: Villa Sancti Petri) is a town in Borsod-Abaúj-Zemplén County, Northern Hungary.

It lies in the Miskolc–Kazincbarcika agglomeration, 10 kilometres away from the county capital.

The town was owned by the king, it belonged first to the Castle of Diósgyőr, then to the Dédes estate.

In the 19th century the formerly agricultural village became an industrial one, coal mines were opened and a glass factory was built.

Being halfway between two of the largest industrial cities of the area, Sajószentpéter couldn't avoid being more and more industrialized during the Socialist era, but, like in other cities and towns of Northern Hungary, the industry faced a crisis after the Socialist regime fall, and unemployment became one of the largest problems.