Tuyen Quang is a province of Vietnam, located in the northeastern part of the country to the northwest of Hanoi, at the centre of Lo River valley, atributary of the Red River. Its capital is Tuyen Quang. The province had a population of 784,811 in 2019, with a density of 130 persons per km2 over a total land area of 5,867.3 square kilometres (2,265.4 sq mi).