Nord-Trøndelag (Urban East Norwegian: [ˈnûːˌʈrœndəlɑːɡ] ; "North Trøndelag") was a county constituting the northern part of the present-day Trøndelag county in Norway. It bordered the old Sør-Trøndelag ("South Trøndelag") county as well as the county of Nordland. To the west is the Norwegian Sea (Atlantic Ocean), and to the east is Jämtland in Sweden. The county was established in 1804 when the old Trondhjems amt was divided into two: Nordre Trondhjems amt and Søndre Trondhjems amt. In 2016, the two county councils voted to merge (back) into a single county on 1 January 2018.
As of 1 January 2014, the county had 135,142 inhabitants, making it the country's fourth-least populated county. The largest municipalities are Stjørdal, Steinkjer (the county seat), Levanger, Namsos, and Verdal, all with between 24,000 and 12,000 inhabitants. The economy is primarily centered on services, although there are significant industries in agriculture, fisheries, hydroelectricity and forestry. It has the lowest gross domestic product per capita of any county in the country.