Northern Croatia or North Croatia refers to the northern parts of Croatia, encompassing Zagreb, Varaždin, Međimurje, Zagorje and Koprivnica-Križevci counties, including the cities of Zagreb, Varaždin, Čakovec, Krapina, Koprivnica and Križevci. The region is home to the Kajkavian dialect, which some consider to be a separate language of its own. The region borders Hungary to its north-east and Slovenia to its north-west.

Zagreb County is a county in Northern Croatia. It surrounds, but does not contain, the nation's capital Zagreb, which is a separate territorial unit. For that reason, the county is often nicknamed "Zagreb ring". According to the 2011 census, the county has 317,606 inhabitants, most of whom live in smaller urban satellite towns.