Trondheim is a city and municipality in Trøndelag county, Norway. It has a population of 193,501 (4th quarter 2017) and is the third-most populous municipality in Norway, although the fourth largest urban area. It is the third largest city in the country, with a population (2013) of 169,972 inhabitants within the city borders. Trondheim lies on the south shore of Trondheim Fjord at the mouth of the River Nidelva. The city is dominated by the Norwegian University of Science and Technology (NTNU), the Foundation for Scientific and Industrial Research (SINTEF), St. Olavs University Hospital and other technology-oriented institutions.